-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * Copyright (C) 2016 Adam <Adam@anope.org>
+ * Copyright (C) 2015 Daniel Vassdal <shutter@canternet.org>
+ * Copyright (C) 2013, 2016-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ * Copyright (C) 2007, 2009-2010 Craig Edwards <brain@inspircd.org>
+ * Copyright (C) 2007, 2009 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2006 Oliver Lupton <om@inspircd.org>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+/// $CompilerFlags: -Iexecute("pg_config --includedir" "POSTGRESQL_INCLUDE_DIR")
+/// $LinkerFlags: -Lexecute("pg_config --libdir" "POSTGRESQL_LIBRARY_DIR") -lpq
+
+/// $PackageInfo: require_system("arch") postgresql-libs
+/// $PackageInfo: require_system("centos") postgresql-devel
+/// $PackageInfo: require_system("darwin") postgresql
+/// $PackageInfo: require_system("debian") libpq-dev
+/// $PackageInfo: require_system("ubuntu") libpq-dev
+
+
#include "inspircd.h"
#include <cstdlib>
-#include <sstream>
#include <libpq-fe.h>
-#include "m_sqlv2.h"
-
-/* $ModDesc: PostgreSQL Service Provider module for all other m_sql* modules, uses v2 of the SQL API */
-/* $CompileFlags: -Iexec("pg_config --includedir") eval("my $s = `pg_config --version`;$s =~ /^.*?(\d+)\.(\d+)\.(\d+).*?$/;my $v = hex(sprintf("0x%02x%02x%02x", $1, $2, $3));print "-DPGSQL_HAS_ESCAPECONN" if(($v >= 0x080104) || ($v >= 0x07030F && $v < 0x070400) || ($v >= 0x07040D && $v < 0x080000) || ($v >= 0x080008 && $v < 0x080100));") */
-/* $LinkerFlags: -Lexec("pg_config --libdir") -lpq */
-/* $ModDep: m_sqlv2.h */
-
+#include "modules/sql.h"
/* SQLConn rewritten by peavey to
* use EventHandler instead of
/* Forward declare, so we can have the typedef neatly at the top */
class SQLConn;
+class ModulePgSQL;
-typedef std::map<std::string, SQLConn*> ConnMap;
-
-/* CREAD, Connecting and wants read event
- * CWRITE, Connecting and wants write event
- * WREAD, Connected/Working and wants read event
- * WWRITE, Connected/Working and wants write event
- * RREAD, Resetting and wants read event
- * RWRITE, Resetting and wants write event
- */
-enum SQLstatus { CREAD, CWRITE, WREAD, WWRITE, RREAD, RWRITE };
-
-unsigned long count(const char * const str, char a)
-{
- unsigned long n = 0;
- for (const char *p = str; *p; ++p)
- {
- if (*p == '?')
- ++n;
- }
- return n;
-}
+typedef insp::flat_map<std::string, SQLConn*> ConnMap;
-/** SQLhost::GetDSN() - Overload to return correct DSN for PostgreSQL
- */
-std::string SQLhost::GetDSN()
+enum SQLstatus
{
- std::ostringstream conninfo("connect_timeout = '5'");
-
- if (host.length())
- conninfo << " host = '" << host << "'";
+ // The connection has died.
+ DEAD,
- if (port)
- conninfo << " port = '" << port << "'";
+ // Connecting and wants read event.
+ CREAD,
- if (name.length())
- conninfo << " dbname = '" << name << "'";
+ // Connecting and wants write event.
+ CWRITE,
- if (user.length())
- conninfo << " user = '" << user << "'";
+ // Connected/working and wants read event.
+ WREAD,
- if (pass.length())
- conninfo << " password = '" << pass << "'";
-
- if (ssl)
- {
- conninfo << " sslmode = 'require'";
- }
- else
- {
- conninfo << " sslmode = 'disable'";
- }
-
- return conninfo.str();
-}
+ // Connected/working and wants write event.
+ WWRITE
+};
class ReconnectTimer : public Timer
{
private:
- Module* mod;
+ ModulePgSQL* mod;
public:
- ReconnectTimer(InspIRCd* SI, Module* m)
- : Timer(5, SI->Time(), false), mod(m)
+ ReconnectTimer(ModulePgSQL* m) : Timer(5, false), mod(m)
{
}
- virtual void Tick(time_t TIME);
+ bool Tick(time_t TIME) CXX11_OVERRIDE;
};
+struct QueueItem
+{
+ SQL::Query* c;
+ std::string q;
+ QueueItem(SQL::Query* C, const std::string& Q) : c(C), q(Q) {}
+};
/** PgSQLresult is a subclass of the mostly-pure-virtual class SQLresult.
* All SQL providers must create their own subclass and define it's methods using that
* data is passes to the module nearly as directly as if it was using the API directly itself.
*/
-class PgSQLresult : public SQLresult
+class PgSQLresult : public SQL::Result
{
PGresult* res;
int currentrow;
int rows;
- int cols;
+ std::vector<std::string> colnames;
- SQLfieldList* fieldlist;
- SQLfieldMap* fieldmap;
-public:
- PgSQLresult(Module* self, Module* to, unsigned long rid, PGresult* result)
- : SQLresult(self, to, rid), res(result), currentrow(0), fieldlist(NULL), fieldmap(NULL)
+ void getColNames()
+ {
+ colnames.resize(PQnfields(res));
+ for(unsigned int i=0; i < colnames.size(); i++)
+ {
+ colnames[i] = PQfname(res, i);
+ }
+ }
+ public:
+ PgSQLresult(PGresult* result) : res(result), currentrow(0)
{
rows = PQntuples(res);
- cols = PQnfields(res);
+ if (!rows)
+ rows = ConvToNum<int>(PQcmdTuples(res));
}
~PgSQLresult()
{
- /* If we allocated these, free them... */
- if(fieldlist)
- delete fieldlist;
-
- if(fieldmap)
- delete fieldmap;
-
PQclear(res);
}
- virtual int Rows()
+ int Rows() CXX11_OVERRIDE
{
- if(!cols && !rows)
- {
- return atoi(PQcmdTuples(res));
- }
- else
- {
- return rows;
- }
+ return rows;
}
- virtual int Cols()
+ void GetCols(std::vector<std::string>& result) CXX11_OVERRIDE
{
- return PQnfields(res);
+ if (colnames.empty())
+ getColNames();
+ result = colnames;
}
- virtual std::string ColName(int column)
+ bool HasColumn(const std::string& column, size_t& index) CXX11_OVERRIDE
{
- char* name = PQfname(res, column);
-
- return (name) ? name : "";
- }
+ if (colnames.empty())
+ getColNames();
- virtual int ColNum(const std::string &column)
- {
- int n = PQfnumber(res, column.c_str());
-
- if(n == -1)
- {
- throw SQLbadColName();
- }
- else
+ for (size_t i = 0; i < colnames.size(); ++i)
{
- return n;
+ if (colnames[i] == column)
+ {
+ index = i;
+ return true;
+ }
}
+ return false;
}
- virtual SQLfield GetValue(int row, int column)
+ SQL::Field GetValue(int row, int column)
{
char* v = PQgetvalue(res, row, column);
+ if (!v || PQgetisnull(res, row, column))
+ return SQL::Field();
- if(v)
- {
- return SQLfield(std::string(v, PQgetlength(res, row, column)), PQgetisnull(res, row, column));
- }
- else
- {
- throw SQLbadColName();
- }
+ return SQL::Field(std::string(v, PQgetlength(res, row, column)));
}
- virtual SQLfieldList& GetRow()
+ bool GetRow(SQL::Row& result) CXX11_OVERRIDE
{
- /* In an effort to reduce overhead we don't actually allocate the list
- * until the first time it's needed...so...
- */
- if(fieldlist)
- {
- fieldlist->clear();
- }
- else
+ if (currentrow >= PQntuples(res))
+ return false;
+ int ncols = PQnfields(res);
+
+ for(int i = 0; i < ncols; i++)
{
- fieldlist = new SQLfieldList;
+ result.push_back(GetValue(currentrow, i));
}
+ currentrow++;
- if(currentrow < PQntuples(res))
- {
- int ncols = PQnfields(res);
+ return true;
+ }
+};
- for(int i = 0; i < ncols; i++)
- {
- fieldlist->push_back(GetValue(currentrow, i));
- }
+/** SQLConn represents one SQL session.
+ */
+class SQLConn : public SQL::Provider, public EventHandler
+{
+ public:
+ reference<ConfigTag> conf; /* The <database> entry */
+ std::deque<QueueItem> queue;
+ PGconn* sql; /* PgSQL database connection handle */
+ SQLstatus status; /* PgSQL database connection status */
+ QueueItem qinprog; /* If there is currently a query in progress */
- currentrow++;
- }
+ SQLConn(Module* Creator, ConfigTag* tag)
+ : SQL::Provider(Creator, tag->getString("id"))
+ , conf(tag)
+ , sql(NULL)
+ , status(CWRITE)
+ , qinprog(NULL, "")
+ {
+ if (!DoConnect())
+ DelayReconnect();
+ }
- return *fieldlist;
+ CullResult cull() CXX11_OVERRIDE
+ {
+ this->SQL::Provider::cull();
+ ServerInstance->Modules->DelService(*this);
+ return this->EventHandler::cull();
}
- virtual SQLfieldMap& GetRowMap()
+ ~SQLConn()
{
- /* In an effort to reduce overhead we don't actually allocate the map
- * until the first time it's needed...so...
- */
- if(fieldmap)
- {
- fieldmap->clear();
- }
- else
+ SQL::Error err(SQL::BAD_DBID);
+ if (qinprog.c)
{
- fieldmap = new SQLfieldMap;
+ qinprog.c->OnError(err);
+ delete qinprog.c;
}
-
- if(currentrow < PQntuples(res))
+ for(std::deque<QueueItem>::iterator i = queue.begin(); i != queue.end(); i++)
{
- int ncols = PQnfields(res);
-
- for(int i = 0; i < ncols; i++)
- {
- fieldmap->insert(std::make_pair(ColName(i), GetValue(currentrow, i)));
- }
-
- currentrow++;
+ SQL::Query* q = i->c;
+ q->OnError(err);
+ delete q;
}
-
- return *fieldmap;
+ Close();
}
- virtual SQLfieldList* GetRowPtr()
+ void OnEventHandlerRead() CXX11_OVERRIDE
{
- SQLfieldList* fl = new SQLfieldList;
-
- if(currentrow < PQntuples(res))
- {
- int ncols = PQnfields(res);
-
- for(int i = 0; i < ncols; i++)
- {
- fl->push_back(GetValue(currentrow, i));
- }
-
- currentrow++;
- }
-
- return fl;
+ DoEvent();
}
- virtual SQLfieldMap* GetRowMapPtr()
+ void OnEventHandlerWrite() CXX11_OVERRIDE
{
- SQLfieldMap* fm = new SQLfieldMap;
-
- if(currentrow < PQntuples(res))
- {
- int ncols = PQnfields(res);
-
- for(int i = 0; i < ncols; i++)
- {
- fm->insert(std::make_pair(ColName(i), GetValue(currentrow, i)));
- }
-
- currentrow++;
- }
-
- return fm;
+ DoEvent();
}
- virtual void Free(SQLfieldMap* fm)
+ void OnEventHandlerError(int errornum) CXX11_OVERRIDE
{
- delete fm;
+ DelayReconnect();
}
- virtual void Free(SQLfieldList* fl)
+ std::string GetDSN()
{
- delete fl;
- }
-};
+ std::ostringstream conninfo("connect_timeout = '5'");
+ std::string item;
-/** SQLConn represents one SQL session.
- */
-class SQLConn : public EventHandler
-{
- private:
- InspIRCd* ServerInstance;
- SQLhost confhost; /* The <database> entry */
- Module* us; /* Pointer to the SQL provider itself */
- PGconn* sql; /* PgSQL database connection handle */
- SQLstatus status; /* PgSQL database connection status */
- bool qinprog; /* If there is currently a query in progress */
- QueryQueue queue; /* Queue of queries waiting to be executed on this connection */
- time_t idle; /* Time we last heard from the database */
+ if (conf->readString("host", item))
+ conninfo << " host = '" << item << "'";
- public:
- SQLConn(InspIRCd* SI, Module* self, const SQLhost& hi)
- : EventHandler(), ServerInstance(SI), confhost(hi), us(self), sql(NULL), status(CWRITE), qinprog(false)
- {
- idle = this->ServerInstance->Time();
- if(!DoConnect())
- {
- ServerInstance->Logs->Log("m_pgsql",DEFAULT, "WARNING: Could not connect to database with id: " + ConvToStr(hi.id));
- DelayReconnect();
- }
- }
+ if (conf->readString("port", item))
+ conninfo << " port = '" << item << "'";
- ~SQLConn()
- {
- Close();
- }
+ if (conf->readString("name", item))
+ conninfo << " dbname = '" << item << "'";
- virtual void HandleEvent(EventType et, int errornum)
- {
- switch (et)
- {
- case EVENT_READ:
- OnDataReady();
- break;
+ if (conf->readString("user", item))
+ conninfo << " user = '" << item << "'";
- case EVENT_WRITE:
- OnWriteReady();
- break;
+ if (conf->readString("pass", item))
+ conninfo << " password = '" << item << "'";
- case EVENT_ERROR:
- DelayReconnect();
- break;
+ if (conf->getBool("ssl"))
+ conninfo << " sslmode = 'require'";
+ else
+ conninfo << " sslmode = 'disable'";
- default:
- break;
- }
+ return conninfo.str();
+ }
+
+ bool HandleConnectError(const char* reason)
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Could not connect to the \"%s\" database: %s",
+ GetId().c_str(), reason);
+ return false;
}
bool DoConnect()
{
- if(!(sql = PQconnectStart(confhost.GetDSN().c_str())))
- return false;
+ sql = PQconnectStart(GetDSN().c_str());
+ if (!sql)
+ return HandleConnectError("PQconnectStart returned NULL");
if(PQstatus(sql) == CONNECTION_BAD)
- return false;
+ return HandleConnectError("connection status is bad");
if(PQsetnonblocking(sql, 1) == -1)
- return false;
+ return HandleConnectError("unable to mark fd as non-blocking");
- /* OK, we've initalised the connection, now to get it hooked into the socket engine
+ /* OK, we've initialised the connection, now to get it hooked into the socket engine
* and then start polling it.
*/
- this->fd = PQsocket(sql);
+ SetFd(PQsocket(sql));
+ if(!HasFd())
+ return HandleConnectError("PQsocket returned an invalid fd");
- if(this->fd <= -1)
- return false;
-
- if (!this->ServerInstance->SE->AddFd(this))
- {
- ServerInstance->Logs->Log("m_pgsql",DEBUG, "BUG: Couldn't add pgsql socket to socket engine");
- return false;
- }
+ if (!SocketEngine::AddFd(this, FD_WANT_NO_WRITE | FD_WANT_NO_READ))
+ return HandleConnectError("could not add the pgsql socket to the socket engine");
/* Socket all hooked into the engine, now to tell PgSQL to start connecting */
- return DoPoll();
+ if (!DoPoll())
+ return HandleConnectError("could not poll the connection state");
+
+ return true;
}
bool DoPoll()
switch(PQconnectPoll(sql))
{
case PGRES_POLLING_WRITING:
- ServerInstance->SE->WantWrite(this);
+ SocketEngine::ChangeEventMask(this, FD_WANT_POLL_WRITE | FD_WANT_NO_READ);
status = CWRITE;
return true;
case PGRES_POLLING_READING:
+ SocketEngine::ChangeEventMask(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
status = CREAD;
return true;
case PGRES_POLLING_FAILED:
+ SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ status = DEAD;
return false;
case PGRES_POLLING_OK:
+ SocketEngine::ChangeEventMask(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
status = WWRITE;
- return DoConnectedPoll();
+ DoConnectedPoll();
+ return true;
default:
return true;
}
}
- bool DoConnectedPoll()
+ void DoConnectedPoll()
{
- if(!qinprog && queue.totalsize())
+restart:
+ while (qinprog.q.empty() && !queue.empty())
{
/* There's no query currently in progress, and there's queries in the queue. */
- SQLrequest& query = queue.front();
- DoQuery(query);
+ DoQuery(queue.front());
+ queue.pop_front();
}
- if(PQconsumeInput(sql))
+ if (PQconsumeInput(sql))
{
- /* We just read stuff from the server, that counts as it being alive
- * so update the idle-since time :p
- */
- idle = this->ServerInstance->Time();
-
if (PQisBusy(sql))
{
/* Nothing happens here */
}
- else if (qinprog)
+ else if (qinprog.c)
{
- /* Grab the request we're processing */
- SQLrequest& query = queue.front();
-
- /* Get a pointer to the module we're about to return the result to */
- Module* to = query.GetSource();
-
/* Fetch the result.. */
PGresult* result = PQgetResult(sql);
result = temp;
}
- if(to)
+ /* ..and the result */
+ PgSQLresult reply(result);
+ switch(PQresultStatus(result))
{
- /* ..and the result */
- PgSQLresult reply(us, to, query.id, result);
-
- /* Fix by brain, make sure the original query gets sent back in the reply */
- reply.query = query.query.q;
-
- switch(PQresultStatus(result))
+ case PGRES_EMPTY_QUERY:
+ case PGRES_BAD_RESPONSE:
+ case PGRES_FATAL_ERROR:
{
- case PGRES_EMPTY_QUERY:
- case PGRES_BAD_RESPONSE:
- case PGRES_FATAL_ERROR:
- reply.error.Id(SQL_QREPLY_FAIL);
- reply.error.Str(PQresultErrorMessage(result));
- default:
- ;
- /* No action, other values are not errors */
+ SQL::Error err(SQL::QREPLY_FAIL, PQresultErrorMessage(result));
+ qinprog.c->OnError(err);
+ break;
}
-
- reply.Send();
-
- /* PgSQLresult's destructor will free the PGresult */
+ default:
+ /* Other values are not errors */
+ qinprog.c->OnResult(reply);
}
- else
- {
- /* If the client module is unloaded partway through a query then the provider will set
- * the pointer to NULL. We cannot just cancel the query as the result will still come
- * through at some point...and it could get messy if we play with invalid pointers...
- */
- PQclear(result);
- }
- qinprog = false;
- queue.pop();
- DoConnectedPoll();
+
+ delete qinprog.c;
+ qinprog = QueueItem(NULL, "");
+ goto restart;
+ }
+ else
+ {
+ qinprog.q.clear();
}
- return true;
}
else
{
* Returning true so the core doesn't try and close the connection.
*/
DelayReconnect();
- return true;
}
}
- bool DoResetPoll()
- {
- switch(PQresetPoll(sql))
- {
- case PGRES_POLLING_WRITING:
- ServerInstance->SE->WantWrite(this);
- status = CWRITE;
- return DoPoll();
- case PGRES_POLLING_READING:
- status = CREAD;
- return true;
- case PGRES_POLLING_FAILED:
- return false;
- case PGRES_POLLING_OK:
- status = WWRITE;
- return DoConnectedPoll();
- default:
- return true;
- }
- }
-
- bool OnDataReady()
- {
- /* Always return true here, false would close the socket - we need to do that ourselves with the pgsql API */
- return DoEvent();
- }
-
- bool OnWriteReady()
- {
- /* Always return true here, false would close the socket - we need to do that ourselves with the pgsql API */
- return DoEvent();
- }
-
- bool OnConnected()
- {
- return DoEvent();
- }
-
void DelayReconnect();
- bool DoEvent()
+ void DoEvent()
{
- bool ret;
-
if((status == CREAD) || (status == CWRITE))
{
- ret = DoPoll();
+ DoPoll();
}
- else if((status == RREAD) || (status == RWRITE))
+ else if (status == WREAD || status == WWRITE)
{
- ret = DoResetPoll();
+ DoConnectedPoll();
+ }
+ }
+
+ void Submit(SQL::Query *req, const std::string& q) CXX11_OVERRIDE
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Executing PostgreSQL query: " + q);
+ if (qinprog.q.empty())
+ {
+ DoQuery(QueueItem(req,q));
}
else
{
- ret = DoConnectedPoll();
+ // wait your turn.
+ queue.push_back(QueueItem(req,q));
}
- return ret;
}
- SQLerror DoQuery(SQLrequest &req)
+ void Submit(SQL::Query *req, const std::string& q, const SQL::ParamList& p) CXX11_OVERRIDE
{
- if((status == WREAD) || (status == WWRITE))
+ std::string res;
+ unsigned int param = 0;
+ for(std::string::size_type i = 0; i < q.length(); i++)
{
- if(!qinprog)
+ if (q[i] != '?')
+ res.push_back(q[i]);
+ else
{
- /* Parse the command string and dispatch it */
-
- /* Pointer to the buffer we screw around with substitution in */
- char* query;
- /* Pointer to the current end of query, where we append new stuff */
- char* queryend;
-
- /* Total length of the unescaped parameters */
- unsigned long maxparamlen, paramcount;
-
- /* The length of the longest parameter */
- maxparamlen = 0;
-
- for(ParamL::iterator i = req.query.p.begin(); i != req.query.p.end(); i++)
+ if (param < p.size())
{
- if (i->size() > maxparamlen)
- maxparamlen = i->size();
+ std::string parm = p[param++];
+ std::vector<char> buffer(parm.length() * 2 + 1);
+ int error;
+ size_t escapedsize = PQescapeStringConn(sql, &buffer[0], parm.data(), parm.length(), &error);
+ if (error)
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "BUG: Apparently PQescapeStringConn() failed");
+ res.append(&buffer[0], escapedsize);
}
+ }
+ }
+ Submit(req, res);
+ }
- /* How many params are there in the query? */
- paramcount = count(req.query.q.c_str(), '?');
-
- /* This stores copy of params to be inserted with using numbered params 1;3B*/
- ParamL paramscopy(req.query.p);
-
- /* To avoid a lot of allocations, allocate enough memory for the biggest the escaped query could possibly be.
- * sizeofquery + (maxtotalparamlength*2) + 1
- *
- * The +1 is for null-terminating the string for PQsendQuery()
- */
-
- query = new char[req.query.q.length() + (maxparamlen*paramcount*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
- * the parameters into it...
- */
-
- for(unsigned int i = 0; i < req.query.q.length(); i++)
- {
- if(req.query.q[i] == '?')
- {
- /* We found a place to substitute..what fun.
- * Use the PgSQL calls to escape and write the
- * escaped string onto the end of our query buffer,
- * then we "just" need to make sure queryend is
- * pointing at the right place.
- */
-
- /* Is it numbered parameter?
- */
-
- bool numbered;
- numbered = false;
-
- /* Numbered parameter number :|
- */
- unsigned int paramnum;
- paramnum = 0;
-
- /* Let's check if it's a numbered param. And also calculate it's number.
- */
-
- while ((i < req.query.q.length() - 1) && (req.query.q[i+1] >= '0') && (req.query.q[i+1] <= '9'))
- {
- numbered = true;
- ++i;
- paramnum = paramnum * 10 + req.query.q[i] - '0';
- }
-
- if (paramnum > paramscopy.size() - 1)
- {
- /* index is out of range!
- */
- numbered = false;
- }
-
- if (numbered)
- {
- int error = 0;
- size_t len = 0;
-
-#ifdef PGSQL_HAS_ESCAPECONN
- len = PQescapeStringConn(sql, queryend, paramscopy[paramnum].c_str(), paramscopy[paramnum].length(), &error);
-#else
- len = PQescapeString (queryend, paramscopy[paramnum].c_str(), paramscopy[paramnum].length());
-#endif
- if (error)
- {
- ServerInstance->Logs->Log("m_pgsql", DEBUG, "BUG: Apparently PQescapeStringConn() failed somehow...don't know how or what to do...");
- }
-
- /* Incremenet queryend to the end of the newly escaped parameter */
- queryend += len;
- }
- else if (req.query.p.size())
- {
- int error = 0;
- size_t len = 0;
-
-#ifdef PGSQL_HAS_ESCAPECONN
- len = PQescapeStringConn(sql, queryend, req.query.p.front().c_str(), req.query.p.front().length(), &error);
-#else
- len = PQescapeString (queryend, req.query.p.front().c_str(), req.query.p.front().length());
-#endif
- if(error)
- {
- ServerInstance->Logs->Log("m_pgsql",DEBUG, "BUG: Apparently PQescapeStringConn() failed somehow...don't know how or what to do...");
- }
-
- /* Incremenet queryend to the end of the newly escaped parameter */
- queryend += len;
-
- /* Remove the parameter we just substituted in */
- req.query.p.pop_front();
- }
- else
- {
- ServerInstance->Logs->Log("m_pgsql",DEBUG, "BUG: Found a substitution location but no parameter to substitute :|");
- break;
- }
- }
- else
- {
- *queryend = req.query.q[i];
- queryend++;
- }
- }
-
- /* Null-terminate the query */
- *queryend = 0;
- req.query.q = query;
-
- if(PQsendQuery(sql, query))
- {
- qinprog = true;
- delete[] query;
- return SQLerror();
- }
- else
+ void Submit(SQL::Query *req, const std::string& q, const SQL::ParamMap& p) CXX11_OVERRIDE
+ {
+ std::string res;
+ for(std::string::size_type i = 0; i < q.length(); i++)
+ {
+ if (q[i] != '$')
+ res.push_back(q[i]);
+ else
+ {
+ std::string field;
+ i++;
+ while (i < q.length() && isalnum(q[i]))
+ field.push_back(q[i++]);
+ i--;
+
+ SQL::ParamMap::const_iterator it = p.find(field);
+ if (it != p.end())
{
- delete[] query;
- return SQLerror(SQL_QSEND_FAIL, PQerrorMessage(sql));
+ std::string parm = it->second;
+ std::vector<char> buffer(parm.length() * 2 + 1);
+ int error;
+ size_t escapedsize = PQescapeStringConn(sql, &buffer[0], parm.data(), parm.length(), &error);
+ if (error)
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "BUG: Apparently PQescapeStringConn() failed");
+ res.append(&buffer[0], escapedsize);
}
}
}
- return SQLerror(SQL_BAD_CONN, "Can't query until connection is complete");
+ Submit(req, res);
}
- SQLerror Query(const SQLrequest &req)
+ void DoQuery(const QueueItem& req)
{
- queue.push(req);
+ if (status != WREAD && status != WWRITE)
+ {
+ // whoops, not connected...
+ SQL::Error err(SQL::BAD_CONN);
+ req.c->OnError(err);
+ delete req.c;
+ return;
+ }
- if(!qinprog && queue.totalsize())
+ if(PQsendQuery(sql, req.q.c_str()))
{
- /* There's no query currently in progress, and there's queries in the queue. */
- SQLrequest& query = queue.front();
- return DoQuery(query);
+ qinprog = req;
}
else
{
- return SQLerror();
+ SQL::Error err(SQL::QSEND_FAIL, PQerrorMessage(sql));
+ req.c->OnError(err);
+ delete req.c;
}
}
- void OnUnloadModule(Module* mod)
- {
- queue.PurgeModule(mod);
- }
-
- const SQLhost GetConfHost()
- {
- return confhost;
- }
-
void Close()
{
- if (!this->ServerInstance->SE->DelFd(this))
- {
- if (sql && PQstatus(sql) == CONNECTION_BAD)
- {
- this->ServerInstance->SE->DelFd(this, true);
- }
- else
- {
- ServerInstance->Logs->Log("m_pgsql",DEBUG, "BUG: PQsocket cant be removed from socket engine!");
- }
- }
+ status = DEAD;
+
+ if (HasFd() && SocketEngine::HasFd(GetFd()))
+ SocketEngine::DelFd(this);
if(sql)
{
sql = NULL;
}
}
-
};
class ModulePgSQL : public Module
{
- private:
+ public:
ConnMap connections;
- unsigned long currid;
- char* sqlsuccess;
ReconnectTimer* retimer;
- public:
- ModulePgSQL(InspIRCd* Me)
- : Module(Me), currid(0)
+ ModulePgSQL()
+ : retimer(NULL)
{
- ServerInstance->Modules->UseInterface("SQLutils");
-
- sqlsuccess = new char[strlen(SQLSUCCESS)+1];
-
- strlcpy(sqlsuccess, SQLSUCCESS, strlen(SQLSUCCESS));
-
- if (!ServerInstance->Modules->PublishFeature("SQL", this))
- {
- throw ModuleException("BUG: PgSQL Unable to publish feature 'SQL'");
- }
-
- ReadConf();
-
- ServerInstance->Modules->PublishInterface("SQL", this);
- Implementation eventlist[] = { I_OnUnloadModule, I_OnRequest, I_OnRehash };
- ServerInstance->Modules->Attach(eventlist, this, 3);
}
- virtual ~ModulePgSQL()
+ ~ModulePgSQL()
{
- if (retimer)
- ServerInstance->Timers->DelTimer(retimer);
+ delete retimer;
ClearAllConnections();
- delete[] sqlsuccess;
- ServerInstance->Modules->UnpublishInterface("SQL", this);
- ServerInstance->Modules->UnpublishFeature("SQL");
- ServerInstance->Modules->DoneWithInterface("SQLutils");
}
-
- virtual void OnRehash(User* user)
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ReadConf();
}
- 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(const SQLhost &h)
- {
- ConfigReader conf(ServerInstance);
- 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", "0", i);
- if (h == host)
- return true;
- }
- return false;
- }
-
void ReadConf()
{
- ClearOldConnections();
-
- ConfigReader conf(ServerInstance);
- for(int i = 0; i < conf.Enumerate("database"); i++)
+ ConnMap conns;
+ ConfigTagList tags = ServerInstance->Config->ConfTags("database");
+ for(ConfigIter i = tags.first; i != tags.second; 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", "0", i);
-
- if (HasHost(host))
+ if (!stdalgo::string::equalsci(i->second->getString("module"), "pgsql"))
continue;
-
- this->AddConn(host);
- }
- }
-
- void ClearOldConnections()
- {
- ConnMap::iterator iter,safei;
- for (iter = connections.begin(); iter != connections.end(); iter++)
- {
- if (!HostInConf(iter->second->GetConfHost()))
+ std::string id = i->second->getString("id");
+ ConnMap::iterator curr = connections.find(id);
+ if (curr == connections.end())
{
- delete iter->second;
- safei = iter;
- --iter;
- connections.erase(safei);
+ SQLConn* conn = new SQLConn(this, i->second);
+ if (conn->status != DEAD)
+ {
+ conns.insert(std::make_pair(id, conn));
+ ServerInstance->Modules->AddService(*conn);
+ }
+ // If the connection is dead it has already been queued for culling
+ // at the end of the main loop so we don't need to delete it here.
+ }
+ else
+ {
+ conns.insert(*curr);
+ connections.erase(curr);
}
}
+ ClearAllConnections();
+ conns.swap(connections);
}
void ClearAllConnections()
{
- ConnMap::iterator i;
- while ((i = connections.begin()) != connections.end())
+ for(ConnMap::iterator i = connections.begin(); i != connections.end(); i++)
{
- connections.erase(i);
+ i->second->cull();
delete i->second;
}
+ connections.clear();
}
- void AddConn(const SQLhost& hi)
- {
- if (HasHost(hi))
- {
- ServerInstance->Logs->Log("m_pgsql",DEFAULT, "WARNING: A pgsql connection with id: %s already exists. Aborting connection attempt.", hi.id.c_str());
- return;
- }
-
- SQLConn* newconn;
-
- newconn = new SQLConn(ServerInstance, this, hi);
-
- connections.insert(std::make_pair(hi.id, newconn));
- }
-
- void ReconnectConn(SQLConn* conn)
- {
- for (ConnMap::iterator iter = connections.begin(); iter != connections.end(); iter++)
- {
- if (conn == iter->second)
- {
- delete iter->second;
- connections.erase(iter);
- break;
- }
- }
- retimer = new ReconnectTimer(ServerInstance, this);
- ServerInstance->Timers->AddTimer(retimer);
- }
-
- virtual const char* OnRequest(Request* request)
+ void OnUnloadModule(Module* mod) CXX11_OVERRIDE
{
- if(strcmp(SQLREQID, request->GetId()) == 0)
+ SQL::Error err(SQL::BAD_DBID);
+ for(ConnMap::iterator i = connections.begin(); i != connections.end(); i++)
{
- SQLrequest* req = (SQLrequest*)request;
- ConnMap::iterator iter;
- if((iter = connections.find(req->dbid)) != connections.end())
+ SQLConn* conn = i->second;
+ if (conn->qinprog.c && conn->qinprog.c->creator == mod)
{
- /* Execute query */
- req->id = NewID();
- req->error = iter->second->Query(*req);
-
- return (req->error.Id() == SQL_NO_ERROR) ? sqlsuccess : NULL;
+ conn->qinprog.c->OnError(err);
+ delete conn->qinprog.c;
+ conn->qinprog.c = NULL;
}
- else
+ std::deque<QueueItem>::iterator j = conn->queue.begin();
+ while (j != conn->queue.end())
{
- req->error.Id(SQL_BAD_DBID);
- return NULL;
+ SQL::Query* q = j->c;
+ if (q->creator == mod)
+ {
+ q->OnError(err);
+ delete q;
+ j = conn->queue.erase(j);
+ }
+ else
+ j++;
}
}
- return NULL;
}
- virtual void OnUnloadModule(Module* mod, const std::string& name)
+ Version GetVersion() CXX11_OVERRIDE
{
- /* When a module unloads we have to check all the pending queries for all our connections
- * and set the Module* specifying where the query came from to NULL. If the query has already
- * been dispatched then when it is processed it will be dropped if the pointer is NULL.
- *
- * If the queries we find are not already being executed then we can simply remove them immediately.
- */
- for(ConnMap::iterator iter = connections.begin(); iter != connections.end(); iter++)
- {
- iter->second->OnUnloadModule(mod);
- }
- }
-
- unsigned long NewID()
- {
- if (currid+1 == 0)
- currid++;
-
- return ++currid;
- }
-
- virtual Version GetVersion()
- {
- return Version("PostgreSQL Service Provider module for all other m_sql* modules, uses v2 of the SQL API", VF_VENDOR|VF_SERVICEPROVIDER, API_VERSION);
+ return Version("Provides the ability for SQL modules to query a PostgreSQL database.", VF_VENDOR);
}
};
-void ReconnectTimer::Tick(time_t time)
+bool ReconnectTimer::Tick(time_t time)
{
- ((ModulePgSQL*)mod)->ReadConf();
+ mod->retimer = NULL;
+ mod->ReadConf();
+ delete this;
+ return false;
}
void SQLConn::DelayReconnect()
{
- ((ModulePgSQL*)us)->ReconnectConn(this);
+ status = DEAD;
+ ModulePgSQL* mod = (ModulePgSQL*)(Module*)creator;
+
+ ConnMap::iterator it = mod->connections.find(conf->getString("id"));
+ if (it != mod->connections.end())
+ mod->connections.erase(it);
+ ServerInstance->GlobalCulls.AddItem((EventHandler*)this);
+ if (!mod->retimer)
+ {
+ mod->retimer = new ReconnectTimer(mod);
+ ServerInstance->Timers.AddTimer(mod->retimer);
+ }
}
MODULE_INIT(ModulePgSQL)
projects / user / henk / code / inspircd.git / blobdiff