/* +------------------------------------+ * | 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. * * --------------------------------------------------- */ #include "inspircd.h" #include "users.h" #include "channels.h" #include "modules.h" #include "configreader.h" #include "m_sqlv2.h" #include "m_sqlutils.h" #include "m_hash.h" #include "commands/cmd_oper.h" /* $ModDesc: Allows storage of oper credentials in an SQL table */ /* $ModDep: m_sqlv2.h m_sqlutils.h */ class ModuleSQLOper : public Module { Module* SQLutils; Module* HashModule; std::string databaseid; public: ModuleSQLOper(InspIRCd* Me) : Module::Module(Me) { ServerInstance->Modules->UseInterface("SQLutils"); ServerInstance->Modules->UseInterface("SQL"); ServerInstance->Modules->UseInterface("HashRequest"); /* Attempt to locate the md5 service provider, bail if we can't find it */ HashModule = ServerInstance->Modules->Find("m_md5.so"); if (!HashModule) throw ModuleException("Can't find m_md5.so. Please load m_md5.so before m_sqloper.so."); SQLutils = ServerInstance->Modules->Find("m_sqlutils.so"); if (!SQLutils) throw ModuleException("Can't find m_sqlutils.so. Please load m_sqlutils.so before m_sqloper.so."); OnRehash(NULL,""); Implementation eventlist[] = { I_OnRequest, I_OnRehash, I_OnPreCommand }; ServerInstance->Modules->Attach(eventlist, this, 3); } virtual ~ModuleSQLOper() { ServerInstance->Modules->DoneWithInterface("SQL"); ServerInstance->Modules->DoneWithInterface("SQLutils"); ServerInstance->Modules->DoneWithInterface("HashRequest"); } virtual void OnRehash(User* user, const std::string ¶meter) { ConfigReader Conf(ServerInstance); databaseid = Conf.ReadValue("sqloper", "dbid", 0); /* Database ID of a database configured for the service provider module */ } virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, User *user, bool validated, const std::string &original_line) { if ((validated) && (command == "OPER")) { if (LookupOper(user, parameters[0], parameters[1])) { /* Returning true here just means the query is in progress, or on it's way to being * in progress. Nothing about the /oper actually being successful.. * If the oper lookup fails later, we pass the command to the original handler * for /oper by calling its Handle method directly. */ return 1; } } return 0; } bool LookupOper(User* user, const std::string &username, const std::string &password) { Module* target; target = ServerInstance->Modules->FindFeature("SQL"); if (target) { /* Reset hash module first back to MD5 standard state */ HashResetRequest(this, HashModule).Send(); /* Make an MD5 hash of the password for using in the query */ std::string md5_pass_hash = HashSumRequest(this, HashModule, password.c_str()).Send(); /* We generate our own MD5 sum here because some database providers (e.g. SQLite) dont have a builtin md5 function, * also hashing it in the module and only passing a remote query containing a hash is more secure. */ SQLrequest req = SQLrequest(this, target, databaseid, SQLquery("SELECT username, password, hostname, type FROM ircd_opers WHERE username = '?' AND password='?'") % username % md5_pass_hash); if (req.Send()) { /* When we get the query response from the service provider we will be given an ID to play with, * just an ID number which is unique to this query. We need a way of associating that ID with a User * so we insert it into a map mapping the IDs to users. * Thankfully m_sqlutils provides this, it will associate a ID with a user or channel, and if the user quits it removes the * association. This means that if the user quits during a query we will just get a failed lookup from m_sqlutils - telling * us to discard the query. */ AssociateUser(this, SQLutils, req.id, user).Send(); user->Extend("oper_user", strdup(username.c_str())); user->Extend("oper_pass", strdup(password.c_str())); return true; } else { return false; } } else { ServerInstance->Log(SPARSE, "WARNING: Couldn't find SQL provider module. NOBODY will be able to oper up unless their o:line is statically configured"); return false; } } virtual const char* OnRequest(Request* request) { if (strcmp(SQLRESID, request->GetId()) == 0) { SQLresult* res = static_cast(request); User* user = GetAssocUser(this, SQLutils, res->id).S().user; UnAssociate(this, SQLutils, res->id).S(); char* tried_user = NULL; char* tried_pass = NULL; user->GetExt("oper_user", tried_user); user->GetExt("oper_pass", tried_pass); if (user) { if (res->error.Id() == NO_ERROR) { if (res->Rows()) { /* We got a row in the result, this means there was a record for the oper.. * now we just need to check if their host matches, and if it does then * oper them up. * * We now (previous versions of the module didn't) support multiple SQL * rows per-oper in the same way the config file does, all rows will be tried * until one is found which matches. This is useful to define several different * hosts for a single oper. * * The for() loop works as SQLresult::GetRowMap() returns an empty map when there * are no more rows to return. */ for (SQLfieldMap& row = res->GetRowMap(); row.size(); row = res->GetRowMap()) { if (OperUser(user, row["username"].d, row["password"].d, row["hostname"].d, row["type"].d)) { /* If/when one of the rows matches, stop checking and return */ return SQLSUCCESS; } if (tried_user && tried_pass) { LoginFail(user, tried_user, tried_pass); free(tried_user); free(tried_pass); user->Shrink("oper_user"); user->Shrink("oper_pass"); } } } else { /* No rows in result, this means there was no oper line for the user, * we should have already checked the o:lines so now we need an * "insufficient awesomeness" (invalid credentials) error */ if (tried_user && tried_pass) { LoginFail(user, tried_user, tried_pass); free(tried_user); free(tried_pass); user->Shrink("oper_user"); user->Shrink("oper_pass"); } } } else { /* This one shouldn't happen, the query failed for some reason. * We have to fail the /oper request and give them the same error * as above. */ if (tried_user && tried_pass) { LoginFail(user, tried_user, tried_pass); free(tried_user); free(tried_pass); user->Shrink("oper_user"); user->Shrink("oper_pass"); } } } return SQLSUCCESS; } return NULL; } void LoginFail(User* user, const std::string &username, const std::string &pass) { Command* oper_command = ServerInstance->Parser->GetHandler("OPER"); if (oper_command) { const char* params[] = { username.c_str(), pass.c_str() }; oper_command->Handle(params, 2, user); } else { ServerInstance->Log(DEBUG, "BUG: WHAT?! Why do we have no OPER command?!"); } } bool OperUser(User* user, const std::string &username, const std::string &password, const std::string &pattern, const std::string &type) { ConfigReader Conf(ServerInstance); for (int j = 0; j < Conf.Enumerate("type"); j++) { std::string tname = Conf.ReadValue("type","name",j); std::string hostname(user->ident); hostname.append("@").append(user->host); if ((tname == type) && OneOfMatches(hostname.c_str(), user->GetIPString(), pattern.c_str())) { /* Opertype and host match, looks like this is it. */ std::string operhost = Conf.ReadValue("type", "host", j); if (operhost.size()) user->ChangeDisplayedHost(operhost.c_str()); ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s", user->nick, user->ident, user->host, type.c_str()); user->WriteServ("381 %s :You are now %s %s",user->nick, strchr("aeiouAEIOU", type[0]) ? "an" : "a", irc::Spacify(type.c_str())); if (!user->modes[UM_OPERATOR]) user->Oper(type, tname); return true; } } return false; } virtual Version GetVersion() { return Version(1,1,1,0,VF_VENDOR,API_VERSION); } }; MODULE_INIT(ModuleSQLOper)