X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fcommand_parse.cpp;h=fff8653b36986afa3bbed70430887ccddd936de0;hb=8c2d96013084de950e3a63be4ae6ed626c4093ab;hp=bf2e61ce974c8f4d79a4dde41d43a0a6e57bf23a;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/command_parse.cpp b/src/command_parse.cpp index bf2e61ce9..fff8653b3 100644 --- a/src/command_parse.cpp +++ b/src/command_parse.cpp @@ -1 +1,665 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include #include "users.h" #include "modules.h" #include "wildcard.h" #include "xline.h" #include "socketengine.h" #include "socket.h" #include "command_parse.h" /* Directory Searching for Unix-Only */ #ifndef WIN32 #include #include #endif bool InspIRCd::ULine(const char* server) { if (!server) return false; if (!*server) return true; return (Config->ulines.find(server) != Config->ulines.end()); } bool InspIRCd::SilentULine(const char* server) { std::map::iterator n = Config->ulines.find(server); if (n != Config->ulines.end()) return n->second; else return false; } int InspIRCd::OperPassCompare(const char* data,const char* input, int tagnumber) { int MOD_RESULT = 0; FOREACH_RESULT_I(this,I_OnOperCompare,OnOperCompare(data, input, tagnumber)) if (MOD_RESULT == 1) return 0; if (MOD_RESULT == -1) return 1; return strcmp(data,input); } std::string InspIRCd::TimeString(time_t curtime) { return std::string(ctime(&curtime),24); } /** Refactored by Brain, Jun 2007. Much faster with some clever O(1) array * lookups and pointer maths. */ long InspIRCd::Duration(const std::string &str) { unsigned char multiplier = 0; long total = 0; long times = 1; long subtotal = 0; /* Iterate each item in the string, looking for number or multiplier */ for (std::string::const_reverse_iterator i = str.rbegin(); i != str.rend(); ++i) { /* Found a number, queue it onto the current number */ if ((*i >= '0') && (*i <= '9')) { subtotal = subtotal + ((*i - '0') * times); times = times * 10; } else { /* Found something thats not a number, find out how much * it multiplies the built up number by, multiply the total * and reset the built up number. */ if (subtotal) total += subtotal * duration_multi[multiplier]; /* Next subtotal please */ subtotal = 0; multiplier = *i; times = 1; } } if (multiplier) { total += subtotal * duration_multi[multiplier]; subtotal = 0; } /* Any trailing values built up are treated as raw seconds */ return total + subtotal; } /* LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list. * There are two overriden versions of this method, one of which takes two potential lists and the other takes one. * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once, * the channel names and their keys as follows: * JOIN #chan1,#chan2,#chan3 key1,,key3 * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating * two instances of irc::commasepstream and reading them both together until the first runs out of tokens. * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc. * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam. */ int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra) { /* First check if we have more than one item in the list, if we don't we return zero here and the handler * which called us just carries on as it was. */ if (!strchr(parameters[splithere],',')) return 0; /** Some lame ircds will weed out dupes using some shitty O(n^2) algorithm. * By using std::map (thanks for the idea w00t) we can cut this down a ton. * ...VOOODOOOO! */ std::map dupes; /* Create two lists, one for channel names, one for keys */ irc::commasepstream items1(parameters[splithere]); irc::commasepstream items2(parameters[extra]); std::string item("*"); unsigned int max = 0; /* Attempt to iterate these lists and call the command objech * which called us, for every parameter pair until there are * no more left to parse. */ while (((item = items1.GetToken()) != "") && (max++ < ServerInstance->Config->MaxTargets)) { if (dupes.find(item.c_str()) == dupes.end()) { const char* new_parameters[127]; for (int t = 0; (t < pcnt) && (t < 127); t++) new_parameters[t] = parameters[t]; std::string extrastuff = items2.GetToken(); new_parameters[splithere] = item.c_str(); new_parameters[extra] = extrastuff.c_str(); CommandObj->Handle(new_parameters,pcnt,user); dupes[item.c_str()] = true; } } return 1; } int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere) { /* First check if we have more than one item in the list, if we don't we return zero here and the handler * which called us just carries on as it was. */ if (!strchr(parameters[splithere],',')) return 0; std::map dupes; /* Only one commasepstream here */ irc::commasepstream items1(parameters[splithere]); std::string item("*"); unsigned int max = 0; /* Parse the commasepstream until there are no tokens remaining. * Each token we parse out, call the command handler that called us * with it */ while (((item = items1.GetToken()) != "") && (max++ < ServerInstance->Config->MaxTargets)) { if (dupes.find(item.c_str()) == dupes.end()) { const char* new_parameters[127]; for (int t = 0; (t < pcnt) && (t < 127); t++) new_parameters[t] = parameters[t]; new_parameters[splithere] = item.c_str(); parameters[splithere] = item.c_str(); /* Execute the command handler over and over. If someone pulls our user * record out from under us (e.g. if we /kill a comma sep list, and we're * in that list ourselves) abort if we're gone. */ CommandObj->Handle(new_parameters,pcnt,user); dupes[item.c_str()] = true; } } /* By returning 1 we tell our caller that nothing is to be done, * as all the previous calls handled the data. This makes the parent * return without doing any processing. */ return 1; } bool CommandParser::IsValidCommand(const std::string &commandname, int pcnt, userrec * user) { command_table::iterator n = cmdlist.find(commandname); if (n != cmdlist.end()) { if ((pcnt>=n->second->min_params) && (n->second->source != "")) { if ((!n->second->flags_needed) || (user->modes[n->second->flags_needed-65])) { if (n->second->flags_needed) { return ((user->HasPermission(commandname)) || (ServerInstance->ULine(user->server))); } return true; } } } return false; } command_t* CommandParser::GetHandler(const std::string &commandname) { command_table::iterator n = cmdlist.find(commandname); if (n != cmdlist.end()) return n->second; return NULL; } // calls a handler function for a command CmdResult CommandParser::CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user) { command_table::iterator n = cmdlist.find(commandname); if (n != cmdlist.end()) { if (pcnt >= n->second->min_params) { if ((!n->second->flags_needed) || (user->modes[n->second->flags_needed-65])) { if (n->second->flags_needed) { if ((user->HasPermission(commandname)) || (!IS_LOCAL(user))) { return n->second->Handle(parameters,pcnt,user); } } else { return n->second->Handle(parameters,pcnt,user); } } } } return CMD_INVALID; } void CommandParser::ProcessCommand(userrec *user, std::string &cmd) { const char *command_p[127]; int items = 0; irc::tokenstream tokens(cmd); std::string command; tokens.GetToken(command); /* A client sent a nick prefix on their command (ick) * rhapsody and some braindead bouncers do this -- * the rfc says they shouldnt but also says the ircd should * discard it if they do. */ if (*command.c_str() == ':') tokens.GetToken(command); while (tokens.GetToken(para[items]) && (items < 127)) { command_p[items] = para[items].c_str(); items++; } std::transform(command.begin(), command.end(), command.begin(), ::toupper); int MOD_RESULT = 0; FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false,cmd)); if (MOD_RESULT == 1) { return; } command_table::iterator cm = cmdlist.find(command); if (cm != cmdlist.end()) { if (user) { /* activity resets the ping pending timer */ user->nping = ServerInstance->Time() + user->pingmax; if (cm->second->flags_needed) { if (!user->IsModeSet(cm->second->flags_needed)) { user->WriteServ("481 %s :Permission Denied - You do not have the required operator privileges",user->nick); return; } if (!user->HasPermission(command)) { user->WriteServ("481 %s :Permission Denied - Oper type %s does not have access to command %s",user->nick,user->oper,command.c_str()); return; } } if ((user->registered == REG_ALL) && (!IS_OPER(user)) && (cm->second->IsDisabled())) { /* command is disabled! */ user->WriteServ("421 %s %s :This command has been disabled.",user->nick,command.c_str()); return; } if (items < cm->second->min_params) { user->WriteServ("461 %s %s :Not enough parameters.", user->nick, command.c_str()); /* If syntax is given, display this as the 461 reply */ if ((ServerInstance->Config->SyntaxHints) && (user->registered == REG_ALL) && (cm->second->syntax.length())) user->WriteServ("304 %s :SYNTAX %s %s", user->nick, cm->second->command.c_str(), cm->second->syntax.c_str()); return; } if ((user->registered == REG_ALL) || (cm->second->WorksBeforeReg())) { /* ikky /stats counters */ cm->second->use_count++; cm->second->total_bytes += cmd.length(); int MOD_RESULT = 0; FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true,cmd)); if (MOD_RESULT == 1) return; /* * WARNING: nothing may come after the * command handler call, as the handler * may free the user structure! */ CmdResult result = cm->second->Handle(command_p,items,user); FOREACH_MOD(I_OnPostCommand,OnPostCommand(command, command_p, items, user, result,cmd)); return; } else { user->WriteServ("451 %s :You have not registered",command.c_str()); return; } } } else if (user) { ServerInstance->stats->statsUnknown++; user->WriteServ("421 %s %s :Unknown command",user->nick,command.c_str()); } } bool CommandParser::RemoveCommands(const char* source) { command_table::iterator i,safei; for (i = cmdlist.begin(); i != cmdlist.end(); i++) { safei = i; safei++; if (safei != cmdlist.end()) { RemoveCommand(safei, source); } } safei = cmdlist.begin(); if (safei != cmdlist.end()) { RemoveCommand(safei, source); } return true; } void CommandParser::RemoveCommand(command_table::iterator safei, const char* source) { command_t* x = safei->second; if (x->source == std::string(source)) { cmdlist.erase(safei); delete x; } } void CommandParser::ProcessBuffer(std::string &buffer,userrec *user) { std::string::size_type a; if (!user) return; while ((a = buffer.rfind("\n")) != std::string::npos) buffer.erase(a); while ((a = buffer.rfind("\r")) != std::string::npos) buffer.erase(a); if (buffer.length()) { if (!user->muted) { ServerInstance->Log(DEBUG,"C[%d] -> :%s %s",user->GetFd(), user->nick, buffer.c_str()); this->ProcessCommand(user,buffer); } } } bool CommandParser::CreateCommand(command_t *f, void* so_handle) { if (so_handle) { if (RFCCommands.find(f->command) == RFCCommands.end()) RFCCommands[f->command] = so_handle; else { ServerInstance->Log(DEFAULT,"ERK! Somehow, we loaded a cmd_*.so file twice! Only the first instance is being recorded."); return false; } } /* create the command and push it onto the table */ if (cmdlist.find(f->command) == cmdlist.end()) { cmdlist[f->command] = f; return true; } else return false; } CommandParser::CommandParser(InspIRCd* Instance) : ServerInstance(Instance) { para.resize(128); this->SetupCommandTable(); } bool CommandParser::FindSym(void** v, void* h) { *v = dlsym(h, "init_command"); const char* err = dlerror(); if (err && !(*v)) { ServerInstance->Log(SPARSE, "Error loading core command: %s\n", err); return false; } return true; } bool CommandParser::ReloadCommand(const char* cmd) { char filename[MAXBUF]; char commandname[MAXBUF]; int y = 0; for (const char* x = cmd; *x; x++, y++) commandname[y] = toupper(*x); commandname[y] = 0; SharedObjectList::iterator command = RFCCommands.find(commandname); if (command != RFCCommands.end()) { command_t* cmdptr = cmdlist.find(commandname)->second; cmdlist.erase(cmdlist.find(commandname)); for (char* x = commandname; *x; x++) *x = tolower(*x); delete cmdptr; dlclose(command->second); RFCCommands.erase(command); snprintf(filename, MAXBUF, "cmd_%s.so", commandname); this->LoadCommand(filename); return true; } return false; } CmdResult cmd_reload::Handle(const char** parameters, int pcnt, userrec *user) { user->WriteServ("NOTICE %s :*** Reloading command '%s'",user->nick, parameters[0]); if (ServerInstance->Parser->ReloadCommand(parameters[0])) { user->WriteServ("NOTICE %s :*** Successfully reloaded command '%s'", user->nick, parameters[0]); ServerInstance->WriteOpers("*** RELOAD: %s reloaded the '%s' command.", user->nick, parameters[0]); return CMD_SUCCESS; } else { user->WriteServ("NOTICE %s :*** Could not reload command '%s'", user->nick, parameters[0]); return CMD_FAILURE; } } void CommandParser::LoadCommand(const char* name) { char filename[MAXBUF]; void* h; command_t* (*cmd_factory_func)(InspIRCd*); snprintf(filename, MAXBUF, "%s/%s", LIBRARYDIR, name); h = dlopen(filename, RTLD_NOW | RTLD_GLOBAL); if (!h) { ServerInstance->Log(SPARSE, "Error loading core command: %s", dlerror()); return; } if (this->FindSym((void **)&cmd_factory_func, h)) { command_t* newcommand = cmd_factory_func(ServerInstance); this->CreateCommand(newcommand, h); } } void CommandParser::SetupCommandTable() { RFCCommands.clear(); printf("\nLoading core commands"); fflush(stdout); DIR* library = opendir(LIBRARYDIR); if (library) { dirent* entry = NULL; while ((entry = readdir(library))) { if (match(entry->d_name, "cmd_*.so")) { printf("."); fflush(stdout); this->LoadCommand(entry->d_name); } } closedir(library); printf("\n"); } this->CreateCommand(new cmd_reload(ServerInstance)); } \ No newline at end of file +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2008 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +/* $Core: libIRCDcommand_parse */ + +#include "inspircd.h" +#include "wildcard.h" +#include "xline.h" +#include "socketengine.h" +#include "socket.h" +#include "command_parse.h" +#include "exitcodes.h" + +/* Directory Searching for Unix-Only */ +#ifndef WIN32 +#include +#include +#endif + +int InspIRCd::PassCompare(Extensible* ex, const char* data,const char* input, const char* hashtype) +{ + int MOD_RESULT = 0; + FOREACH_RESULT_I(this,I_OnPassCompare,OnPassCompare(ex, data, input, hashtype)) + if (MOD_RESULT == 1) + return 0; + if (MOD_RESULT == -1) + return 1; + return strcmp(data,input); +} + +/* LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list. + * There are two overriden versions of this method, one of which takes two potential lists and the other takes one. + * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once, + * the channel names and their keys as follows: + * JOIN #chan1,#chan2,#chan3 key1,,key3 + * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating + * two instances of irc::commasepstream and reading them both together until the first runs out of tokens. + * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc. + * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam. + */ +int CommandParser::LoopCall(User* user, Command* CommandObj, const char* const* parameters, int pcnt, unsigned int splithere, unsigned int extra) +{ + /* First check if we have more than one item in the list, if we don't we return zero here and the handler + * which called us just carries on as it was. + */ + if (!strchr(parameters[splithere],',')) + return 0; + + /** Some lame ircds will weed out dupes using some shitty O(n^2) algorithm. + * By using std::map (thanks for the idea w00t) we can cut this down a ton. + * ...VOOODOOOO! + */ + std::map dupes; + + /* Create two lists, one for channel names, one for keys + */ + irc::commasepstream items1(parameters[splithere]); + irc::commasepstream items2(parameters[extra]); + std::string extrastuff; + std::string item; + unsigned int max = 0; + + /* Attempt to iterate these lists and call the command objech + * which called us, for every parameter pair until there are + * no more left to parse. + */ + while (items1.GetToken(item) && (max++ < ServerInstance->Config->MaxTargets)) + { + if (dupes.find(item.c_str()) == dupes.end()) + { + const char* new_parameters[MAXPARAMETERS]; + + for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++) + new_parameters[t] = parameters[t]; + + if (!items2.GetToken(extrastuff)) + extrastuff = ""; + + new_parameters[splithere] = item.c_str(); + new_parameters[extra] = extrastuff.c_str(); + + CommandObj->Handle(new_parameters,pcnt,user); + + dupes[item.c_str()] = true; + } + } + return 1; +} + +int CommandParser::LoopCall(User* user, Command* CommandObj, const char* const* parameters, int pcnt, unsigned int splithere) +{ + /* First check if we have more than one item in the list, if we don't we return zero here and the handler + * which called us just carries on as it was. + */ + if (!strchr(parameters[splithere],',')) + return 0; + + std::map dupes; + + /* Only one commasepstream here */ + irc::commasepstream items1(parameters[splithere]); + std::string item; + unsigned int max = 0; + + /* Parse the commasepstream until there are no tokens remaining. + * Each token we parse out, call the command handler that called us + * with it + */ + while (items1.GetToken(item) && (max++ < ServerInstance->Config->MaxTargets)) + { + if (dupes.find(item.c_str()) == dupes.end()) + { + const char* new_parameters[MAXPARAMETERS]; + + for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++) + new_parameters[t] = parameters[t]; + + new_parameters[splithere] = item.c_str(); + + /* Execute the command handler over and over. If someone pulls our user + * record out from under us (e.g. if we /kill a comma sep list, and we're + * in that list ourselves) abort if we're gone. + */ + CommandObj->Handle(new_parameters,pcnt,user); + + dupes[item.c_str()] = true; + } + } + /* By returning 1 we tell our caller that nothing is to be done, + * as all the previous calls handled the data. This makes the parent + * return without doing any processing. + */ + return 1; +} + +bool CommandParser::IsValidCommand(const std::string &commandname, int pcnt, User * user) +{ + Commandable::iterator n = cmdlist.find(commandname); + + if (n != cmdlist.end()) + { + if ((pcnt>=n->second->min_params) && (n->second->source != "")) + { + if (IS_LOCAL(user) && n->second->flags_needed) + { + if (user->IsModeSet(n->second->flags_needed)) + { + return (user->HasPermission(commandname)); + } + } + else + { + return true; + } + } + } + return false; +} + +Command* CommandParser::GetHandler(const std::string &commandname) +{ + Commandable::iterator n = cmdlist.find(commandname); + if (n != cmdlist.end()) + return n->second; + + return NULL; +} + +// calls a handler function for a command + +CmdResult CommandParser::CallHandler(const std::string &commandname,const char* const* parameters, int pcnt, User *user) +{ + Commandable::iterator n = cmdlist.find(commandname); + + if (n != cmdlist.end()) + { + if (pcnt >= n->second->min_params) + { + bool bOkay = false; + + if (IS_LOCAL(user) && n->second->flags_needed) + { + /* if user is local, and flags are needed .. */ + + if (user->IsModeSet(n->second->flags_needed)) + { + /* if user has the flags, and now has the permissions, go ahead */ + if (user->HasPermission(commandname)) + bOkay = true; + } + } + else + { + /* remote or no flags required anyway */ + bOkay = true; + } + + if (bOkay) + { + return n->second->Handle(parameters,pcnt,user); + } + } + } + return CMD_INVALID; +} + +void CommandParser::DoLines(User* current, bool one_only) +{ + // while there are complete lines to process... + unsigned int floodlines = 0; + + while (current->BufferIsReady()) + { + if (current->MyClass) + { + if (ServerInstance->Time() > current->reset_due) + { + current->reset_due = ServerInstance->Time() + current->MyClass->GetThreshold(); + current->lines_in = 0; + } + + if (++current->lines_in > current->MyClass->GetFlood() && current->MyClass->GetFlood()) + { + ServerInstance->FloodQuitUser(current); + return; + } + + if ((++floodlines > current->MyClass->GetFlood()) && (current->MyClass->GetFlood() != 0)) + { + ServerInstance->FloodQuitUser(current); + return; + } + } + + // use GetBuffer to copy single lines into the sanitized string + std::string single_line = current->GetBuffer(); + current->bytes_in += single_line.length(); + current->cmds_in++; + if (single_line.length() > MAXBUF - 2) // MAXBUF is 514 to allow for neccessary line terminators + single_line.resize(MAXBUF - 2); // So to trim to 512 here, we use MAXBUF - 2 + + // ProcessBuffer returns false if the user has gone over penalty + if (!ServerInstance->Parser->ProcessBuffer(single_line, current) || one_only) + break; + } +} + +bool CommandParser::ProcessCommand(User *user, std::string &cmd) +{ + const char *command_p[MAXPARAMETERS]; + int items = 0; + irc::tokenstream tokens(cmd); + std::string command; + tokens.GetToken(command); + + /* A client sent a nick prefix on their command (ick) + * rhapsody and some braindead bouncers do this -- + * the rfc says they shouldnt but also says the ircd should + * discard it if they do. + */ + if (*command.c_str() == ':') + tokens.GetToken(command); + + while (tokens.GetToken(para[items]) && (items < MAXPARAMETERS)) + { + command_p[items] = para[items].c_str(); + items++; + } + + std::transform(command.begin(), command.end(), command.begin(), ::toupper); + + int MOD_RESULT = 0; + FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false,cmd)); + if (MOD_RESULT == 1) { + return true; + } + + /* find the command, check it exists */ + Commandable::iterator cm = cmdlist.find(command); + + if (cm == cmdlist.end()) + { + if (user->registered == REG_ALL) + { + user->WriteNumeric(421, "%s %s :Unknown command",user->nick,command.c_str()); + } + ServerInstance->stats->statsUnknown++; + return true; + } + + /* Modify the user's penalty */ + bool do_more = true; + if (!user->ExemptFromPenalty) + { + user->IncreasePenalty(cm->second->Penalty); + do_more = (user->Penalty < 10); + if (!do_more) + user->OverPenalty = true; + } + + /* activity resets the ping pending timer */ + if (user->MyClass) + user->nping = ServerInstance->Time() + user->MyClass->GetPingTime(); + + if (cm->second->flags_needed) + { + if (!user->IsModeSet(cm->second->flags_needed)) + { + user->WriteNumeric(481, "%s :Permission Denied - You do not have the required operator privileges",user->nick); + return do_more; + } + if (!user->HasPermission(command)) + { + user->WriteNumeric(481, "%s :Permission Denied - Oper type %s does not have access to command %s",user->nick,user->oper,command.c_str()); + return do_more; + } + } + if ((user->registered == REG_ALL) && (!IS_OPER(user)) && (cm->second->IsDisabled())) + { + /* command is disabled! */ + user->WriteNumeric(421, "%s %s :This command has been disabled.",user->nick,command.c_str()); + ServerInstance->SNO->WriteToSnoMask('d', "%s denied for %s (%s@%s)", + command.c_str(), user->nick, user->ident, user->host); + return do_more; + } + if (items < cm->second->min_params) + { + user->WriteNumeric(461, "%s %s :Not enough parameters.", user->nick, command.c_str()); + if ((ServerInstance->Config->SyntaxHints) && (user->registered == REG_ALL) && (cm->second->syntax.length())) + user->WriteNumeric(304, "%s :SYNTAX %s %s", user->nick, cm->second->command.c_str(), cm->second->syntax.c_str()); + return do_more; + } + if ((user->registered != REG_ALL) && (!cm->second->WorksBeforeReg())) + { + user->WriteNumeric(451, "%s :You have not registered",command.c_str()); + return do_more; + } + else + { + /* passed all checks.. first, do the (ugly) stats counters. */ + cm->second->use_count++; + cm->second->total_bytes += cmd.length(); + + /* module calls too */ + MOD_RESULT = 0; + FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true,cmd)); + if (MOD_RESULT == 1) + return do_more; + + /* + * WARNING: be careful, the user may be deleted soon + */ + CmdResult result = cm->second->Handle(command_p,items,user); + + FOREACH_MOD(I_OnPostCommand,OnPostCommand(command, command_p, items, user, result,cmd)); + return do_more; + } +} + +bool CommandParser::RemoveCommands(const char* source) +{ + Commandable::iterator i,safei; + for (i = cmdlist.begin(); i != cmdlist.end(); i++) + { + safei = i; + safei++; + if (safei != cmdlist.end()) + { + RemoveCommand(safei, source); + } + } + safei = cmdlist.begin(); + if (safei != cmdlist.end()) + { + RemoveCommand(safei, source); + } + return true; +} + +void CommandParser::RemoveCommand(Commandable::iterator safei, const char* source) +{ + Command* x = safei->second; + if (x->source == std::string(source)) + { + cmdlist.erase(safei); + delete x; + } +} + +bool CommandParser::ProcessBuffer(std::string &buffer,User *user) +{ + std::string::size_type a; + + if (!user) + return true; + + while ((a = buffer.rfind("\n")) != std::string::npos) + buffer.erase(a); + while ((a = buffer.rfind("\r")) != std::string::npos) + buffer.erase(a); + + if (buffer.length()) + { + ServerInstance->Logs->Log("USERINPUT", DEBUG,"C[%d] I :%s %s",user->GetFd(), user->nick, buffer.c_str()); + return this->ProcessCommand(user,buffer); + } + + return true; +} + +bool CommandParser::CreateCommand(Command *f, void* so_handle) +{ + if (so_handle) + { + if (RFCCommands.find(f->command) == RFCCommands.end()) + RFCCommands[f->command] = so_handle; + else + { + ServerInstance->Logs->Log("COMMAND",DEFAULT,"ERK! Somehow, we loaded a cmd_*.so file twice! Only the first instance is being recorded."); + return false; + } + } + + /* create the command and push it onto the table */ + if (cmdlist.find(f->command) == cmdlist.end()) + { + cmdlist[f->command] = f; + return true; + } + else return false; +} + +CommandParser::CommandParser(InspIRCd* Instance) : ServerInstance(Instance) +{ + para.resize(128); +} + +bool CommandParser::FindSym(void** v, void* h, const std::string &name) +{ + *v = dlsym(h, "init_command"); + const char* err = dlerror(); + if (err && !(*v)) + { + ServerInstance->Logs->Log("COMMAND",SPARSE, "Error loading core command %s: %s\n", name.c_str(), err); + return false; + } + return true; +} + +bool CommandParser::ReloadCommand(const char* cmd, User* user) +{ + char filename[MAXBUF]; + char commandname[MAXBUF]; + int y = 0; + + for (const char* x = cmd; *x; x++, y++) + commandname[y] = toupper(*x); + + commandname[y] = 0; + + SharedObjectList::iterator command = RFCCommands.find(commandname); + + if (command != RFCCommands.end()) + { + Command* cmdptr = cmdlist.find(commandname)->second; + cmdlist.erase(cmdlist.find(commandname)); + + for (char* x = commandname; *x; x++) + *x = tolower(*x); + + + delete cmdptr; + dlclose(command->second); + RFCCommands.erase(command); + + snprintf(filename, MAXBUF, "cmd_%s.so", commandname); + const char* err = this->LoadCommand(filename); + if (err) + { + if (user) + user->WriteServ("NOTICE %s :*** Error loading 'cmd_%s.so': %s", user->nick, cmd, err); + return false; + } + + return true; + } + + return false; +} + +CmdResult cmd_reload::Handle(const char* const* parameters, int /* pcnt */, User *user) +{ + user->WriteServ("NOTICE %s :*** Reloading command '%s'",user->nick, parameters[0]); + if (ServerInstance->Parser->ReloadCommand(parameters[0], user)) + { + user->WriteServ("NOTICE %s :*** Successfully reloaded command '%s'", user->nick, parameters[0]); + ServerInstance->SNO->WriteToSnoMask('A', "RELOAD: %s reloaded the '%s' command.", user->nick, parameters[0]); + return CMD_SUCCESS; + } + else + { + user->WriteServ("NOTICE %s :*** Could not reload command '%s' -- fix this problem, then /REHASH as soon as possible!", user->nick, parameters[0]); + return CMD_FAILURE; + } +} + +const char* CommandParser::LoadCommand(const char* name) +{ + char filename[MAXBUF]; + void* h; + Command* (*cmd_factory_func)(InspIRCd*); + + /* Command already exists? Succeed silently - this is needed for REHASH */ + if (RFCCommands.find(name) != RFCCommands.end()) + { + ServerInstance->Logs->Log("COMMAND",DEBUG,"Not reloading command %s/%s, it already exists", LIBRARYDIR, name); + return NULL; + } + + snprintf(filename, MAXBUF, "%s/%s", LIBRARYDIR, name); + h = dlopen(filename, RTLD_NOW | RTLD_GLOBAL); + + if (!h) + { + const char* n = dlerror(); + ServerInstance->Logs->Log("COMMAND",SPARSE, "Error loading core command %s: %s", name, n); + return n; + } + + if (this->FindSym((void **)&cmd_factory_func, h, name)) + { + Command* newcommand = cmd_factory_func(ServerInstance); + this->CreateCommand(newcommand, h); + } + return NULL; +} + +void CommandParser::SetupCommandTable(User* user) +{ + RFCCommands.clear(); + + if (!user) + { + printf("\nLoading core commands"); + fflush(stdout); + } + + DIR* library = opendir(LIBRARYDIR); + if (library) + { + dirent* entry = NULL; + while ((entry = readdir(library))) + { + if (match(entry->d_name, "cmd_*.so")) + { + if (!user) + { + printf("."); + fflush(stdout); + } + const char* err = this->LoadCommand(entry->d_name); + if (err) + { + if (user) + { + user->WriteServ("NOTICE %s :*** Failed to load core command %s: %s", user->nick, entry->d_name, err); + } + else + { + printf("Error loading %s: %s", entry->d_name, err); + exit(EXIT_STATUS_BADHANDLER); + } + } + } + } + closedir(library); + if (!user) + printf("\n"); + } + + if (cmdlist.find("RELOAD") == cmdlist.end()) + this->CreateCommand(new cmd_reload(ServerInstance)); +} + +int CommandParser::TranslateUIDs(TranslateType to, const std::string &source, std::string &dest) +{ + User* user = NULL; + std::string item; + int translations = 0; + dest.clear(); + + switch (to) + { + case TR_NICK: + /* Translate single nickname */ + user = ServerInstance->FindNick(source); + if (user) + { + dest = user->uuid; + translations++; + } + else + dest = source; + break; + case TR_NICKLIST: + { + /* Translate comma seperated list of nicknames */ + irc::commasepstream items(source); + while (items.GetToken(item)) + { + user = ServerInstance->FindNick(item); + if (user) + { + dest.append(user->uuid); + translations++; + } + else + dest.append(item); + dest.append(","); + } + if (!dest.empty()) + dest.erase(dest.end() - 1); + } + break; + case TR_SPACENICKLIST: + { + /* Translate space seperated list of nicknames */ + irc::spacesepstream items(source); + while (items.GetToken(item)) + { + user = ServerInstance->FindNick(item); + if (user) + { + dest.append(user->uuid); + translations++; + } + else + dest.append(item); + dest.append(" "); + } + if (!dest.empty()) + dest.erase(dest.end() - 1); + } + break; + case TR_END: + case TR_TEXT: + default: + /* Do nothing */ + dest = source; + break; + } + + return translations; +} +