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-rw-r--r--src/modules/extra/m_sqlite3.cpp532
1 files changed, 532 insertions, 0 deletions
diff --git a/src/modules/extra/m_sqlite3.cpp b/src/modules/extra/m_sqlite3.cpp
new file mode 100644
index 000000000..b0a0afbe5
--- /dev/null
+++ b/src/modules/extra/m_sqlite3.cpp
@@ -0,0 +1,532 @@
+/* +------------------------------------+
+ * | 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 <string>
+#include <deque>
+#include <map>
+#include <sqlite3.h>
+
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+#include "inspircd.h"
+#include "configreader.h"
+
+#include "m_sqlv2.h"
+
+/* $ModDesc: sqlite3 provider */
+/* $CompileFlags: pkgconfincludes("sqlite3","/sqlite3.h","") */
+/* $LinkerFlags: pkgconflibs("sqlite3","/libsqlite3.so","-lsqlite3") */
+/* $ModDep: m_sqlv2.h */
+
+
+class SQLConn;
+class SQLite3Result;
+
+typedef std::map<std::string, SQLConn*> ConnMap;
+typedef std::deque<classbase*> paramlist;
+typedef std::deque<SQLite3Result*> ResultQueue;
+
+class SQLite3Result : public SQLresult
+{
+ private:
+ int currentrow;
+ int rows;
+ int cols;
+
+ std::vector<std::string> colnames;
+ std::vector<SQLfieldList> fieldlists;
+ SQLfieldList emptyfieldlist;
+
+ SQLfieldList* fieldlist;
+ SQLfieldMap* fieldmap;
+
+ public:
+ SQLite3Result(Module* self, Module* to, unsigned int id)
+ : SQLresult(self, to, id), currentrow(0), rows(0), cols(0)
+ {
+ }
+
+ ~SQLite3Result()
+ {
+ }
+
+ void AddRow(int colsnum, char **data, char **colname)
+ {
+ colnames.clear();
+ cols = colsnum;
+ for (int i = 0; i < colsnum; i++)
+ {
+ fieldlists.resize(fieldlists.size()+1);
+ colnames.push_back(colname[i]);
+ SQLfield sf(data[i] ? data[i] : "", data[i] ? false : true);
+ fieldlists[rows].push_back(sf);
+ }
+ rows++;
+ }
+
+ virtual int Rows()
+ {
+ return rows;
+ }
+
+ virtual int Cols()
+ {
+ return cols;
+ }
+
+ virtual std::string ColName(int column)
+ {
+ if (column < (int)colnames.size())
+ {
+ return colnames[column];
+ }
+ else
+ {
+ throw SQLbadColName();
+ }
+ return "";
+ }
+
+ virtual int ColNum(const std::string &column)
+ {
+ for (unsigned int i = 0; i < colnames.size(); i++)
+ {
+ if (column == colnames[i])
+ return i;
+ }
+ throw SQLbadColName();
+ return 0;
+ }
+
+ virtual SQLfield GetValue(int row, int column)
+ {
+ if ((row >= 0) && (row < rows) && (column >= 0) && (column < Cols()))
+ {
+ return fieldlists[row][column];
+ }
+
+ throw SQLbadColName();
+
+ /* XXX: We never actually get here because of the throw */
+ return SQLfield("",true);
+ }
+
+ virtual SQLfieldList& GetRow()
+ {
+ if (currentrow < rows)
+ return fieldlists[currentrow];
+ else
+ return emptyfieldlist;
+ }
+
+ virtual SQLfieldMap& GetRowMap()
+ {
+ /* 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
+ {
+ fieldmap = new SQLfieldMap;
+ }
+
+ if (currentrow < rows)
+ {
+ for (int i = 0; i < Cols(); i++)
+ {
+ fieldmap->insert(std::make_pair(ColName(i), GetValue(currentrow, i)));
+ }
+ currentrow++;
+ }
+
+ return *fieldmap;
+ }
+
+ virtual SQLfieldList* GetRowPtr()
+ {
+ fieldlist = new SQLfieldList();
+
+ if (currentrow < rows)
+ {
+ for (int i = 0; i < Rows(); i++)
+ {
+ fieldlist->push_back(fieldlists[currentrow][i]);
+ }
+ currentrow++;
+ }
+ return fieldlist;
+ }
+
+ virtual SQLfieldMap* GetRowMapPtr()
+ {
+ fieldmap = new SQLfieldMap();
+
+ if (currentrow < rows)
+ {
+ for (int i = 0; i < Cols(); i++)
+ {
+ fieldmap->insert(std::make_pair(colnames[i],GetValue(currentrow, i)));
+ }
+ currentrow++;
+ }
+
+ return fieldmap;
+ }
+
+ virtual void Free(SQLfieldMap* fm)
+ {
+ delete fm;
+ }
+
+ virtual void Free(SQLfieldList* fl)
+ {
+ delete fl;
+ }
+
+
+};
+
+class SQLConn : public classbase
+{
+ private:
+ ResultQueue results;
+ InspIRCd* Instance;
+ Module* mod;
+ SQLhost host;
+ sqlite3* conn;
+
+ public:
+ SQLConn(InspIRCd* SI, Module* m, const SQLhost& hi)
+ : Instance(SI), mod(m), host(hi)
+ {
+ int result;
+ if ((result = OpenDB()) == SQLITE_OK)
+ {
+ Instance->Log(DEBUG, "Opened sqlite DB: " + host.host);
+ }
+ else
+ {
+ Instance->Log(DEFAULT, "WARNING: Could not open DB with id: " + host.id);
+ CloseDB();
+ }
+ }
+
+ SQLerror Query(SQLrequest &req)
+ {
+ /* 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 paramlen;
+
+ /* Total length of query, used for binary-safety in mysql_real_query */
+ unsigned long querylength = 0;
+
+ paramlen = 0;
+ for(ParamL::iterator i = req.query.p.begin(); i != req.query.p.end(); i++)
+ {
+ paramlen += i->size();
+ }
+
+ /* To avoid a lot of allocations, allocate enough memory for the biggest the escaped query could possibly be.
+ * sizeofquery + (totalparamlength*2) + 1
+ *
+ * The +1 is for null-terminating the string for mysql_real_escape_string
+ */
+
+ query = new char[req.query.q.length() + (paramlen*2) + 1];
+ queryend = query;
+
+ for(unsigned long i = 0; i < req.query.q.length(); i++)
+ {
+ if(req.query.q[i] == '?')
+ {
+ if(req.query.p.size())
+ {
+ char* escaped;
+ escaped = sqlite3_mprintf("%q", req.query.p.front().c_str());
+ for (char* n = escaped; *n; n++)
+ {
+ *queryend = *n;
+ queryend++;
+ }
+ sqlite3_free(escaped);
+ req.query.p.pop_front();
+ }
+ else
+ break;
+ }
+ else
+ {
+ *queryend = req.query.q[i];
+ queryend++;
+ }
+ querylength++;
+ }
+ *queryend = 0;
+ req.query.q = query;
+
+// Instance->Log(DEBUG, "<******> Doing query: " + ConvToStr(req.query.q.data()));
+
+ SQLite3Result* res = new SQLite3Result(mod, req.GetSource(), req.id);
+ res->query = req.query.q;
+ paramlist params;
+ params.push_back(this);
+ params.push_back(res);
+
+ char *errmsg = 0;
+ if (sqlite3_exec(conn, req.query.q.data(), QueryResult, &params, &errmsg) != SQLITE_OK)
+ {
+ Instance->Log(DEBUG, "Query failed: " + ConvToStr(errmsg));
+ sqlite3_free(errmsg);
+ delete[] query;
+ delete res;
+ return SQLerror(QSEND_FAIL, ConvToStr(errmsg));
+ }
+ Instance->Log(DEBUG, "Dispatched query successfully. ID: %d resulting rows %d", req.id, res->Rows());
+ delete[] query;
+
+ results.push_back(res);
+
+ return SQLerror();
+ }
+
+ static int QueryResult(void *params, int argc, char **argv, char **azColName)
+ {
+ paramlist* p = (paramlist*)params;
+ ((SQLConn*)(*p)[0])->ResultReady(((SQLite3Result*)(*p)[1]), argc, argv, azColName);
+ return 0;
+ }
+
+ void ResultReady(SQLite3Result *res, int cols, char **data, char **colnames)
+ {
+ res->AddRow(cols, data, colnames);
+ }
+
+ void QueryDone(SQLrequest* req, int rows)
+ {
+ SQLite3Result* r = new SQLite3Result(mod, req->GetSource(), req->id);
+ r->dbid = host.id;
+ r->query = req->query.q;
+ }
+
+ int OpenDB()
+ {
+ return sqlite3_open(host.host.c_str(), &conn);
+ }
+
+ void CloseDB()
+ {
+ sqlite3_interrupt(conn);
+ sqlite3_close(conn);
+ }
+
+ SQLhost GetConfHost()
+ {
+ return host;
+ }
+
+ void SendResults()
+ {
+ if (results.size())
+ {
+ SQLite3Result* res = results[0];
+ if (res->GetDest())
+ {
+ res->Send();
+ }
+ 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...
+ */
+ Instance->Log(DEBUG, "Looks like we're handling a zombie query from a module which unloaded before it got a result..fun. ID: " + ConvToStr(res->GetId()));
+ delete res;
+ }
+ results.pop_front();
+ }
+ }
+
+};
+
+
+class ModuleSQLite3 : public Module
+{
+ private:
+ ConnMap connections;
+ unsigned long currid;
+
+ public:
+ ModuleSQLite3(InspIRCd* Me)
+ : Module::Module(Me), currid(0)
+ {
+ ServerInstance->UseInterface("SQLutils");
+
+ if (!ServerInstance->PublishFeature("SQL", this))
+ {
+ throw ModuleException("m_mysql: Unable to publish feature 'SQL'");
+ }
+
+ ReadConf();
+
+ ServerInstance->PublishInterface("SQL", this);
+ }
+
+ virtual ~ModuleSQLite3()
+ {
+ ServerInstance->UnpublishInterface("SQL", this);
+ ServerInstance->UnpublishFeature("SQL");
+ ServerInstance->DoneWithInterface("SQLutils");
+ }
+
+ void Implements(char* List)
+ {
+ List[I_OnRequest] = 1;
+ }
+
+ 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++)
+ {
+ 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))
+ continue;
+
+ this->AddConn(host);
+ }
+ }
+
+ void AddConn(const SQLhost& hi)
+ {
+ if (HasHost(hi))
+ {
+ ServerInstance->Log(DEFAULT, "WARNING: A sqlite connection with id: %s already exists. Aborting database open attempt.", hi.id.c_str());
+ return;
+ }
+
+ SQLConn* newconn;
+
+ newconn = new SQLConn(ServerInstance, this, hi);
+
+ connections.insert(std::make_pair(hi.id, newconn));
+ }
+
+ virtual char* OnRequest(Request* request)
+ {
+ if(strcmp(SQLREQID, request->GetId()) == 0)
+ {
+ SQLrequest* req = (SQLrequest*)request;
+ ConnMap::iterator iter;
+ 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();
+ req->error = iter->second->Query(*req);
+ return SQLSUCCESS;
+ }
+ else
+ {
+ req->error.Id(BAD_DBID);
+ return NULL;
+ }
+ }
+ ServerInstance->Log(DEBUG, "Got unsupported API version string: %s", request->GetId());
+ return NULL;
+ }
+
+ unsigned long NewID()
+ {
+ if (currid+1 == 0)
+ currid++;
+
+ return ++currid;
+ }
+
+ virtual Version GetVersion()
+ {
+ return Version(1,1,0,0,VF_VENDOR|VF_SERVICEPROVIDER,API_VERSION);
+ }
+
+};
+
+
+class ModuleSQLite3Factory : public ModuleFactory
+{
+ public:
+ ModuleSQLite3Factory()
+ {
+ }
+
+ ~ModuleSQLite3Factory()
+ {
+ }
+
+ virtual Module * CreateModule(InspIRCd* Me)
+ {
+ return new ModuleSQLite3(Me);
+ }
+};
+
+extern "C" void * init_module( void )
+{
+ return new ModuleSQLite3Factory;
+}
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