X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fextra%2Fm_mysql.cpp;h=c63ebe7e9d3618589f7835ca75a14ca895b708db;hb=d3c7457dda8555e410f4fbc36bb1b1b4cb0ae3f2;hp=a59ad3b6cb9f95c577837707ab12e08e7b3daf83;hpb=4b0f6c610f755e0cb93843d5a2a6c70336eafe39;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/extra/m_mysql.cpp b/src/modules/extra/m_mysql.cpp index a59ad3b6c..c63ebe7e9 100644 --- a/src/modules/extra/m_mysql.cpp +++ b/src/modules/extra/m_mysql.cpp @@ -2,36 +2,29 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd is copyright (C) 2002-2004 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. + * 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. + * the file COPYING for details. * * --------------------------------------------------- */ -using namespace std; - -#include -#include +#include "inspircd.h" #include #include #include "users.h" #include "channels.h" #include "modules.h" - -#include "inspircd.h" #include "m_sqlv2.h" /* VERSION 2 API: With nonblocking (threaded) requests */ /* $ModDesc: SQL Service Provider module for all other m_sql* modules */ -/* $CompileFlags: `mysql_config --include` */ -/* $LinkerFlags: `mysql_config --libs_r` `perl extra/mysql_rpath.pl` */ +/* $CompileFlags: exec("mysql_config --include") */ +/* $LinkerFlags: exec("mysql_config --libs_r") rpath("mysql_config --libs_r") */ +/* $ModDep: m_sqlv2.h */ /* THE NONBLOCKING MYSQL API! * @@ -85,123 +78,18 @@ int QueueFD = -1; typedef std::deque ResultQueue; -class QueryQueue : public classbase -{ -private: - typedef std::deque ReqDeque; - - ReqDeque priority; /* The priority queue */ - ReqDeque normal; /* The 'normal' queue */ - enum { PRI, NOR, NON } which; /* Which queue the currently active element is at the front of */ - -public: - QueryQueue() - : which(NON) - { - } - - void push(const SQLrequest &q) - { - if(q.pri) - priority.push_back(q); - else - normal.push_back(q); - } - - void pop() - { - if((which == PRI) && priority.size()) - { - priority.pop_front(); - } - else if((which == NOR) && normal.size()) - { - normal.pop_front(); - } - - /* Reset this */ - which = NON; - - /* Silently do nothing if there was no element to pop() */ - } - - SQLrequest& front() - { - switch(which) - { - case PRI: - return priority.front(); - case NOR: - return normal.front(); - default: - if(priority.size()) - { - which = PRI; - return priority.front(); - } - - if(normal.size()) - { - which = NOR; - return normal.front(); - } - - /* This will probably result in a segfault, - * but the caller should have checked totalsize() - * first so..meh - moron :p - */ - - return priority.front(); - } - } - - std::pair size() - { - return std::make_pair(priority.size(), normal.size()); - } - - int totalsize() - { - return priority.size() + normal.size(); - } - - void PurgeModule(Module* mod) - { - DoPurgeModule(mod, priority); - DoPurgeModule(mod, normal); - } - -private: - void DoPurgeModule(Module* mod, ReqDeque& q) - { - for(ReqDeque::iterator iter = q.begin(); iter != q.end(); iter++) - { - if(iter->GetSource() == mod) - { - if(iter->id == front().id) - { - /* It's the currently active query.. :x */ - iter->SetSource(NULL); - } - else - { - /* It hasn't been executed yet..just remove it */ - iter = q.erase(iter); - } - } - } - } -}; - /* A mutex to wrap around queue accesses */ pthread_mutex_t queue_mutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t results_mutex = PTHREAD_MUTEX_INITIALIZER; +pthread_mutex_t logging_mutex = PTHREAD_MUTEX_INITIALIZER; + +/** Represents a mysql result set + */ class MySQLresult : public SQLresult { int currentrow; - //std::vector > results; std::vector colnames; std::vector fieldlists; SQLfieldMap* fieldmap; @@ -383,6 +271,8 @@ class SQLConnection; void NotifyMainThread(SQLConnection* connection_with_new_result); +/** Represents a connection to a mysql database + */ class SQLConnection : public classbase { protected: @@ -390,29 +280,23 @@ class SQLConnection : public classbase MYSQL connection; MYSQL_RES *res; MYSQL_ROW row; - std::string host; - std::string user; - std::string pass; - std::string db; + SQLhost host; std::map thisrow; bool Enabled; - std::string id; public: QueryQueue queue; ResultQueue rq; - // This constructor creates an SQLConnection object with the given credentials, and creates the underlying - // MYSQL struct, but does not connect yet. - SQLConnection(std::string thishost, std::string thisuser, std::string thispass, std::string thisdb, const std::string &myid) + // This constructor creates an SQLConnection object with the given credentials, but does not connect yet. + SQLConnection(const SQLhost &hi) : host(hi), Enabled(false) { - this->Enabled = true; - this->host = thishost; - this->user = thisuser; - this->pass = thispass; - this->db = thisdb; - this->id = myid; + } + + ~SQLConnection() + { + Close(); } // This method connects to the database using the credentials supplied to the constructor, and returns @@ -422,7 +306,7 @@ class SQLConnection : public classbase unsigned int timeout = 1; mysql_init(&connection); mysql_options(&connection,MYSQL_OPT_CONNECT_TIMEOUT,(char*)&timeout); - return mysql_real_connect(&connection, host.c_str(), user.c_str(), pass.c_str(), db.c_str(), 0, NULL, 0); + return mysql_real_connect(&connection, host.host.c_str(), host.user.c_str(), host.pass.c_str(), host.name.c_str(), host.port, NULL, 0); } void DoLeadingQuery() @@ -458,7 +342,7 @@ class SQLConnection : public classbase * The +1 is for null-terminating the string for mysql_real_escape_string */ - query = new char[req.query.q.length() + (paramlen*2)]; + query = new char[req.query.q.length() + (paramlen*2) + 1]; queryend = query; /* Okay, now we have a buffer large enough we need to start copying the query into it and escaping and substituting @@ -532,6 +416,8 @@ class SQLConnection : public classbase * Pass them this connection id as what to examine */ + delete[] query; + NotifyMainThread(this); } @@ -558,12 +444,12 @@ class SQLConnection : public classbase const std::string& GetID() { - return id; + return host.id; } std::string GetHost() { - return host; + return host.host; } void SetEnable(bool Enable) @@ -576,52 +462,142 @@ class SQLConnection : public classbase return Enabled; } + void Close() + { + mysql_close(&connection); + } + + const SQLhost& GetConfHost() + { + return host; + } + }; ConnMap Connections; +bool HasHost(const SQLhost &host) +{ + for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); iter++) + { + if (host == iter->second->GetConfHost()) + return true; + } + return false; +} + +bool HostInConf(ConfigReader* conf, const SQLhost &h) +{ + for(int i = 0; i < conf->Enumerate("database"); i++) + { + SQLhost host; + host.id = conf->ReadValue("database", "id", i); + host.host = conf->ReadValue("database", "hostname", i); + host.port = conf->ReadInteger("database", "port", i, true); + host.name = conf->ReadValue("database", "name", i); + host.user = conf->ReadValue("database", "username", i); + host.pass = conf->ReadValue("database", "password", i); + host.ssl = conf->ReadFlag("database", "ssl", i); + if (h == host) + return true; + } + return false; +} + +void ClearOldConnections(ConfigReader* conf) +{ + ConnMap::iterator i,safei; + for (i = Connections.begin(); i != Connections.end(); i++) + { + if (!HostInConf(conf, i->second->GetConfHost())) + { + DELETE(i->second); + safei = i; + --i; + Connections.erase(safei); + } + } +} + +void ClearAllConnections() +{ + ConnMap::iterator i; + while ((i = Connections.begin()) != Connections.end()) + { + Connections.erase(i); + DELETE(i->second); + } +} + void ConnectDatabases(InspIRCd* ServerInstance) { for (ConnMap::iterator i = Connections.begin(); i != Connections.end(); i++) { + if (i->second->IsEnabled()) + continue; + i->second->SetEnable(true); - if (i->second->Connect()) - { - ServerInstance->Log(DEFAULT,"SQL: Successfully connected database "+i->second->GetHost()); - } - else + if (!i->second->Connect()) { + /* XXX: MUTEX */ + pthread_mutex_lock(&logging_mutex); ServerInstance->Log(DEFAULT,"SQL: Failed to connect database "+i->second->GetHost()+": Error: "+i->second->GetError()); i->second->SetEnable(false); + pthread_mutex_unlock(&logging_mutex); } } } - -void LoadDatabases(ConfigReader* ThisConf, InspIRCd* ServerInstance) +void LoadDatabases(ConfigReader* conf, InspIRCd* ServerInstance) { - ServerInstance->Log(DEFAULT,"SQL: Loading database settings"); - Connections.clear(); - ServerInstance->Log(DEBUG,"Cleared connections"); - for (int j =0; j < ThisConf->Enumerate("database"); j++) - { - std::string db = ThisConf->ReadValue("database","name",j); - std::string user = ThisConf->ReadValue("database","username",j); - std::string pass = ThisConf->ReadValue("database","password",j); - std::string host = ThisConf->ReadValue("database","hostname",j); - std::string id = ThisConf->ReadValue("database","id",j); - ServerInstance->Log(DEBUG,"Read database settings"); - if ((db != "") && (host != "") && (user != "") && (id != "") && (pass != "")) + ClearOldConnections(conf); + for (int j =0; j < conf->Enumerate("database"); j++) + { + SQLhost host; + host.id = conf->ReadValue("database", "id", j); + host.host = conf->ReadValue("database", "hostname", j); + host.port = conf->ReadInteger("database", "port", j, true); + host.name = conf->ReadValue("database", "name", j); + host.user = conf->ReadValue("database", "username", j); + host.pass = conf->ReadValue("database", "password", j); + host.ssl = conf->ReadFlag("database", "ssl", j); + + if (HasHost(host)) + continue; + + if (!host.id.empty() && !host.host.empty() && !host.name.empty() && !host.user.empty() && !host.pass.empty()) { - SQLConnection* ThisSQL = new SQLConnection(host,user,pass,db,id); - ServerInstance->Log(DEFAULT,"Loaded database: "+ThisSQL->GetHost()); - Connections[id] = ThisSQL; - ServerInstance->Log(DEBUG,"Pushed back connection"); + SQLConnection* ThisSQL = new SQLConnection(host); + Connections[host.id] = ThisSQL; } } ConnectDatabases(ServerInstance); } +char FindCharId(const std::string &id) +{ + char i = 1; + for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); ++iter, ++i) + { + if (iter->first == id) + { + return i; + } + } + return 0; +} + +ConnMap::iterator GetCharId(char id) +{ + char i = 1; + for (ConnMap::iterator iter = Connections.begin(); iter != Connections.end(); ++iter, ++i) + { + if (i == id) + return iter; + } + return Connections.end(); +} + void NotifyMainThread(SQLConnection* connection_with_new_result) { /* Here we write() to the socket the main thread has open @@ -632,13 +608,23 @@ void NotifyMainThread(SQLConnection* connection_with_new_result) * thread, we can just use standard connect(), and we can * block if we like. We just send the connection id of the * connection back. + * + * NOTE: We only send a single char down the connection, this + * way we know it wont get a partial read at the other end if + * the system is especially congested (see bug #263). + * The function FindCharId translates a connection name into a + * one character id, and GetCharId translates a character id + * back into an iterator. */ - send(QueueFD, connection_with_new_result->GetID().c_str(), connection_with_new_result->GetID().length()+1, 0); + char id = FindCharId(connection_with_new_result->GetID()); + send(QueueFD, &id, 1, 0); } void* DispatcherThread(void* arg); -class Notifier : public InspSocket +/** Used by m_mysql to notify one thread when the other has a result + */ +class Notifier : public BufferedSocket { insp_sockaddr sock_us; socklen_t uslen; @@ -648,9 +634,9 @@ class Notifier : public InspSocket /* Create a socket on a random port. Let the tcp stack allocate us an available port */ #ifdef IPV6 - Notifier(InspIRCd* SI) : InspSocket(SI, "::1", 0, true, 3000) + Notifier(InspIRCd* SI) : BufferedSocket(SI, "::1", 0, true, 3000) #else - Notifier(InspIRCd* SI) : InspSocket(SI, "127.0.0.1", 0, true, 3000) + Notifier(InspIRCd* SI) : BufferedSocket(SI, "127.0.0.1", 0, true, 3000) #endif { uslen = sizeof(sock_us); @@ -660,9 +646,8 @@ class Notifier : public InspSocket } } - Notifier(InspIRCd* SI, int newfd, char* ip) : InspSocket(SI, newfd, ip) + Notifier(InspIRCd* SI, int newfd, char* ip) : BufferedSocket(SI, newfd, ip) { - Instance->Log(DEBUG,"Constructor of new socket"); } /* Using getsockname and ntohs, we can determine which port number we were allocated */ @@ -677,7 +662,6 @@ class Notifier : public InspSocket virtual int OnIncomingConnection(int newsock, char* ip) { - Instance->Log(DEBUG,"Inbound connection on fd %d!",newsock); Notifier* n = new Notifier(this->Instance, newsock, ip); n = n; /* Stop bitching at me, GCC */ return true; @@ -685,18 +669,18 @@ class Notifier : public InspSocket virtual bool OnDataReady() { - Instance->Log(DEBUG,"Inbound data!"); - char* data = this->Read(); - ConnMap::iterator iter; - - if (data && *data) + char data = 0; + /* NOTE: Only a single character is read so we know we + * cant get a partial read. (We've been told that theres + * data waiting, so we wont ever get EAGAIN) + * The function GetCharId translates a single character + * back into an iterator. + */ + if (Instance->SE->Recv(this, &data, 1, 0) > 0) { - Instance->Log(DEBUG,"Looking for connection %s",data); - /* We expect to be sent a null terminated string */ - if((iter = Connections.find(data)) != Connections.end()) + ConnMap::iterator iter = GetCharId(data); + if (iter != Connections.end()) { - Instance->Log(DEBUG,"Found it!"); - /* Lock the mutex, send back the data */ pthread_mutex_lock(&results_mutex); ResultQueue::iterator n = iter->second->rq.begin(); @@ -705,12 +689,17 @@ class Notifier : public InspSocket pthread_mutex_unlock(&results_mutex); return true; } + /* No error, but unknown id */ + return true; } + /* Erk, error on descriptor! */ return false; } }; +/** MySQL module + */ class ModuleSQL : public Module { public: @@ -719,6 +708,48 @@ class ModuleSQL : public Module InspIRCd* PublicServerInstance; pthread_t Dispatcher; int currid; + bool rehashing; + + ModuleSQL(InspIRCd* Me) + : Module::Module(Me), rehashing(false) + { + ServerInstance->Modules->UseInterface("SQLutils"); + + Conf = new ConfigReader(ServerInstance); + PublicServerInstance = ServerInstance; + currid = 0; + SQLModule = this; + + MessagePipe = new Notifier(ServerInstance); + + pthread_attr_t attribs; + pthread_attr_init(&attribs); + pthread_attr_setdetachstate(&attribs, PTHREAD_CREATE_DETACHED); + if (pthread_create(&this->Dispatcher, &attribs, DispatcherThread, (void *)this) != 0) + { + throw ModuleException("m_mysql: Failed to create dispatcher thread: " + std::string(strerror(errno))); + } + + if (!ServerInstance->Modules->PublishFeature("SQL", this)) + { + /* Tell worker thread to exit NOW */ + giveup = true; + throw ModuleException("m_mysql: Unable to publish feature 'SQL'"); + } + + ServerInstance->Modules->PublishInterface("SQL", this); + } + + virtual ~ModuleSQL() + { + giveup = true; + ClearAllConnections(); + delete Conf; + ServerInstance->Modules->UnpublishInterface("SQL", this); + ServerInstance->Modules->UnpublishFeature("SQL"); + ServerInstance->Modules->DoneWithInterface("SQLutils"); + } + void Implements(char* List) { @@ -745,8 +776,6 @@ class ModuleSQL : public Module char* returnval = NULL; - ServerInstance->Log(DEBUG, "Got query: '%s' with %d replacement parameters on id '%s'", req->query.q.c_str(), req->query.p.size(), req->dbid.c_str()); - if((iter = Connections.find(req->dbid)) != Connections.end()) { req->id = NewID(); @@ -764,46 +793,12 @@ class ModuleSQL : public Module return returnval; } - ServerInstance->Log(DEBUG, "Got unsupported API version string: %s", request->GetId()); - return NULL; } - ModuleSQL(InspIRCd* Me) - : Module::Module(Me) - { - - Conf = new ConfigReader(ServerInstance); - PublicServerInstance = ServerInstance; - currid = 0; - SQLModule = this; - - MessagePipe = new Notifier(ServerInstance); - ServerInstance->Log(DEBUG,"Bound notifier to 127.0.0.1:%d",MessagePipe->GetPort()); - - pthread_attr_t attribs; - pthread_attr_init(&attribs); - pthread_attr_setdetachstate(&attribs, PTHREAD_CREATE_DETACHED); - if (pthread_create(&this->Dispatcher, &attribs, DispatcherThread, (void *)this) != 0) - { - throw ModuleException("m_mysql: Failed to create dispatcher thread: " + std::string(strerror(errno))); - } - if (!ServerInstance->PublishFeature("SQL", this)) - { - /* Tell worker thread to exit NOW */ - giveup = true; - throw ModuleException("m_mysql: Unable to publish feature 'SQL'"); - } - } - - virtual ~ModuleSQL() - { - DELETE(Conf); - } - - virtual void OnRehash(const std::string ¶meter) + virtual void OnRehash(User* user, const std::string ¶meter) { - /* TODO: set rehash bool here, which makes the dispatcher thread rehash at next opportunity */ + rehashing = true; } virtual Version GetVersion() @@ -848,6 +843,16 @@ void* DispatcherThread(void* arg) while (!giveup) { + if (thismodule->rehashing) + { + /* XXX: Lock */ + pthread_mutex_lock(&queue_mutex); + thismodule->rehashing = false; + LoadDatabases(thismodule->Conf, thismodule->PublicServerInstance); + pthread_mutex_unlock(&queue_mutex); + /* XXX: Unlock */ + } + SQLConnection* conn = NULL; /* XXX: Lock here for safety */ pthread_mutex_lock(&queue_mutex); @@ -880,29 +885,4 @@ void* DispatcherThread(void* arg) return NULL; } - -// stuff down here is the module-factory stuff. For basic modules you can ignore this. - -class ModuleSQLFactory : public ModuleFactory -{ - public: - ModuleSQLFactory() - { - } - - ~ModuleSQLFactory() - { - } - - virtual Module * CreateModule(InspIRCd* Me) - { - return new ModuleSQL(Me); - } - -}; - - -extern "C" void * init_module( void ) -{ - return new ModuleSQLFactory; -} +MODULE_INIT(ModuleSQL)