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/*
* (C) 2003-2012 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
/*************************************************************************/
#include "module.h"
class DBFlatFile : public Module
{
Anope::string DatabaseFile;
Anope::string BackupFile;
/* Day the last backup was on */
int LastDay;
/* Backup file names */
std::list<Anope::string> Backups;
public:
DBFlatFile(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, DATABASE)
{
this->SetAuthor("Anope");
Implementation i[] = { I_OnReload, I_OnLoadDatabase, I_OnSaveDatabase };
ModuleManager::Attach(i, this, sizeof(i) / sizeof(Implementation));
OnReload();
LastDay = 0;
}
void BackupDatabase()
{
/* Do not backup a database that doesn't exist */
if (!IsFile(DatabaseFile))
return;
time_t now = Anope::CurTime;
tm *tm = localtime(&now);
if (tm->tm_mday != LastDay)
{
LastDay = tm->tm_mday;
Anope::string newname = BackupFile + "." + stringify(tm->tm_year) + "." + stringify(tm->tm_mon) + "." + stringify(tm->tm_mday);
/* Backup already exists */
if (IsFile(newname))
return;
Log(LOG_DEBUG) << "db_flatfile: Attemping to rename " << DatabaseFile << " to " << newname;
if (rename(DatabaseFile.c_str(), newname.c_str()))
{
Log(this) << "Unable to back up database!";
if (!Config->NoBackupOkay)
quitting = true;
return;
}
Backups.push_back(newname);
if (Config->KeepBackups > 0 && Backups.size() > static_cast<unsigned>(Config->KeepBackups))
{
unlink(Backups.front().c_str());
Backups.pop_front();
}
}
}
void OnReload() anope_override
{
ConfigReader config;
DatabaseFile = db_dir + "/" + config.ReadValue("db_flatfile", "database", "anope.db", 0);
BackupFile = db_dir + "/backups/" + config.ReadValue("db_flatfile", "database", "anope.db", 0);
}
EventReturn OnLoadDatabase() anope_override
{
std::map<Module *, std::fstream *> databases;
databases[NULL] = new std::fstream(DatabaseFile.c_str(), std::ios_base::in);
if (!databases[NULL]->is_open())
{
delete databases[NULL];
Log(this) << "Unable to open " << DatabaseFile << " for reading!";
return EVENT_CONTINUE;
}
const std::vector<Anope::string> type_order = SerializeType::GetTypeOrder();
for (unsigned i = 0; i < type_order.size(); ++i)
{
SerializeType *stype = SerializeType::Find(type_order[i]);
if (stype && !databases.count(stype->GetOwner()))
{
Anope::string db_name = db_dir + "/module_" + stype->GetOwner()->name + ".db";
databases[stype->GetOwner()] = new std::fstream(db_name.c_str(), std::ios_base::in);
}
}
std::multimap<SerializeType *, Serialize::Data> objects;
for (std::map<Module *, std::fstream *>::iterator it = databases.begin(), it_end = databases.end(); it != it_end; ++it)
{
std::fstream *db = it->second;
SerializeType *st = NULL;
Serialize::Data data;
for (Anope::string buf, token; std::getline(*db, buf.str());)
{
spacesepstream sep(buf);
if (!sep.GetToken(token))
continue;
if (token == "OBJECT" && sep.GetToken(token))
{
st = SerializeType::Find(token);
data.clear();
}
else if (token == "DATA" && st != NULL && sep.GetToken(token))
data[token] << sep.GetRemaining();
else if (token == "END" && st != NULL)
{
objects.insert(std::make_pair(st, data));
st = NULL;
data.clear();
}
}
}
for (unsigned i = 0; i < type_order.size(); ++i)
{
SerializeType *stype = SerializeType::Find(type_order[i]);
std::multimap<SerializeType *, Serialize::Data>::iterator it = objects.find(stype), it_end = objects.upper_bound(stype);
if (it == objects.end())
continue;
for (; it != it_end; ++it)
it->first->Unserialize(NULL, it->second);
}
for (std::map<Module *, std::fstream *>::iterator it = databases.begin(), it_end = databases.end(); it != it_end; ++it)
{
it->second->close();
delete it->second;
}
return EVENT_STOP;
}
EventReturn OnSaveDatabase() anope_override
{
BackupDatabase();
Anope::string tmp_db = DatabaseFile + ".tmp";
if (IsFile(DatabaseFile))
rename(DatabaseFile.c_str(), tmp_db.c_str());
std::map<Module *, std::fstream *> databases;
databases[NULL] = new std::fstream(DatabaseFile.c_str(), std::ios_base::out | std::ios_base::trunc);
if (!databases[NULL]->is_open())
{
delete databases[NULL];
Log(this) << "Unable to open " << DatabaseFile << " for writing";
if (IsFile(tmp_db))
rename(tmp_db.c_str(), DatabaseFile.c_str());
return EVENT_CONTINUE;
}
const std::list<Serializable *> &items = Serializable::GetItems();
for (std::list<Serializable *>::const_iterator it = items.begin(), it_end = items.end(); it != it_end; ++it)
{
Serializable *base = *it;
SerializeType *s_type = base->GetSerializableType();
if (!s_type)
continue;
Serialize::Data data = base->serialize();
if (!databases.count(s_type->GetOwner()))
{
Anope::string db_name = db_dir + "/module_" + s_type->GetOwner()->name + ".db";
databases[s_type->GetOwner()] = new std::fstream(db_name.c_str(), std::ios_base::out | std::ios_base::trunc);
}
std::fstream *fd = databases[s_type->GetOwner()];
*fd << "OBJECT " << s_type->GetName() << "\n";
for (Serialize::Data::iterator dit = data.begin(), dit_end = data.end(); dit != dit_end; ++dit)
*fd << "DATA " << dit->first << " " << dit->second.astr() << "\n";
*fd << "END\n";
}
if (databases[NULL]->good() == false)
{
Log(this) << "Unable to write database";
databases[NULL]->close();
if (!Config->NoBackupOkay)
quitting = true;
if (IsFile(tmp_db))
rename(tmp_db.c_str(), DatabaseFile.c_str());
}
else
unlink(tmp_db.c_str());
for (std::map<Module *, std::fstream *>::iterator it = databases.begin(), it_end = databases.end(); it != it_end; ++it)
{
it->second->close();
delete it->second;
}
return EVENT_CONTINUE;
}
};
MODULE_INIT(DBFlatFile)
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