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minetest/src/rollback.cpp

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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "rollback.h"
#include <fstream>
#include <list>
#include <sstream>
#include "log.h"
#include "mapnode.h"
#include "gamedef.h"
#include "nodedef.h"
#include "util/serialize.h"
#include "util/string.h"
#include "util/numeric.h"
#include "inventorymanager.h" // deserializing InventoryLocations
#include "sqlite3.h"
#include "filesys.h"
#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
#define POINTS_PER_NODE (16.0)
std::string dbp;
sqlite3* dbh;
sqlite3_stmt* dbs_insert;
sqlite3_stmt* dbs_replace;
sqlite3_stmt* dbs_select;
sqlite3_stmt* dbs_select_range;
sqlite3_stmt* dbs_select_withActor;
sqlite3_stmt* dbs_knownActor_select;
sqlite3_stmt* dbs_knownActor_insert;
sqlite3_stmt* dbs_knownNode_select;
sqlite3_stmt* dbs_knownNode_insert;
struct Stack {
int node;
int quantity;
};
struct ActionRow {
int id;
int actor;
time_t timestamp;
int type;
std::string location, list;
int index, add;
Stack stack;
int nodeMeta;
int x, y, z;
int oldNode;
int oldParam1, oldParam2;
std::string oldMeta;
int newNode;
int newParam1, newParam2;
std::string newMeta;
int guessed;
};
struct Entity {
int id;
std::string name;
};
typedef std::vector<Entity> Entities;
Entities KnownActors;
Entities KnownNodes;
void registerNewActor(int id, std::string name)
{
Entity newActor;
newActor.id = id;
newActor.name = name;
KnownActors.push_back(newActor);
//std::cout << "New actor registered: " << id << " | " << name << std::endl;
}
void registerNewNode(int id, std::string name)
{
Entity newNode;
newNode.id = id;
newNode.name = name;
KnownNodes.push_back(newNode);
//std::cout << "New node registered: " << id << " | " << name << std::endl;
}
int getActorId(std::string name)
{
Entities::const_iterator iter;
for (iter = KnownActors.begin(); iter != KnownActors.end(); ++iter)
if (iter->name == name) {
return iter->id;
}
sqlite3_reset(dbs_knownActor_insert);
sqlite3_bind_text(dbs_knownActor_insert, 1, name.c_str(), -1, NULL);
sqlite3_step(dbs_knownActor_insert);
int id = sqlite3_last_insert_rowid(dbh);
//std::cout << "Actor ID insert returns " << insert << std::endl;
registerNewActor(id, name);
return id;
}
int getNodeId(std::string name)
{
Entities::const_iterator iter;
for (iter = KnownNodes.begin(); iter != KnownNodes.end(); ++iter)
if (iter->name == name) {
return iter->id;
}
sqlite3_reset(dbs_knownNode_insert);
sqlite3_bind_text(dbs_knownNode_insert, 1, name.c_str(), -1, NULL);
sqlite3_step(dbs_knownNode_insert);
int id = sqlite3_last_insert_rowid(dbh);
registerNewNode(id, name);
return id;
}
const char * getActorName(int id)
{
Entities::const_iterator iter;
//std::cout << "getActorName of id " << id << std::endl;
for (iter = KnownActors.begin(); iter != KnownActors.end(); ++iter)
if (iter->id == id) {
return iter->name.c_str();
}
return "";
}
const char * getNodeName(int id)
{
Entities::const_iterator iter;
//std::cout << "getNodeName of id " << id << std::endl;
for (iter = KnownNodes.begin(); iter != KnownNodes.end(); ++iter)
if (iter->id == id) {
return iter->name.c_str();
}
return "";
}
Stack getStackFromString(std::string text)
{
Stack stack;
size_t off = text.find_last_of(" ");
stack.node = getNodeId(text.substr(0, off));
stack.quantity = atoi(text.substr(off + 1).c_str());
return stack;
}
std::string getStringFromStack(Stack stack)
{
std::string text;
text.append(getNodeName(stack.node));
text.append(" ");
text.append(itos(stack.quantity));
return text;
}
bool SQL_createDatabase(void)
{
infostream << "CreateDB:" << dbp << std::endl;
int dbs = sqlite3_exec(dbh,
"CREATE TABLE IF NOT EXISTS `actor` ("
"`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
"`name` TEXT NOT NULL);"
"CREATE TABLE IF NOT EXISTS `node` ("
"`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
"`name` TEXT NOT NULL);"
"CREATE TABLE IF NOT EXISTS `action` ("
"`id` INTEGER PRIMARY KEY AUTOINCREMENT,"
"`actor` INTEGER NOT NULL,"
"`timestamp` TIMESTAMP NOT NULL,"
"`type` INTEGER NOT NULL,"
"`list` TEXT,"
"`index` INTEGER,"
"`add` INTEGER,"
"`stackNode` INTEGER,"
"`stackQuantity` INTEGER,"
"`nodeMeta` INTEGER,"
"`x` INT,"
"`y` INT,"
"`z` INT,"
"`oldNode` INTEGER,"
"`oldParam1` INTEGER,"
"`oldParam2` INTEGER,"
"`oldMeta` TEXT,"
"`newNode` INTEGER,"
"`newParam1` INTEGER,"
"`newParam2` INTEGER,"
"`newMeta` TEXT,"
"`guessedActor` INTEGER,"
"FOREIGN KEY (`actor`) REFERENCES `actor`(`id`),"
"FOREIGN KEY (`oldNode`) REFERENCES `node`(`id`),"
"FOREIGN KEY (`newNode`) REFERENCES `node`(`id`));"
"CREATE INDEX IF NOT EXISTS `actionActor` ON `action`(`actor`);"
"CREATE INDEX IF NOT EXISTS `actionTimestamp` ON `action`(`timestamp`);",
NULL, NULL, NULL);
if (dbs == SQLITE_ABORT) {
throw FileNotGoodException("Could not create sqlite3 database structure");
} else if (dbs != 0) {
throw FileNotGoodException("SQL Rollback: Exec statement to create table structure returned a non-zero value");
} else {
infostream << "SQL Rollback: SQLite3 database structure was created" << std::endl;
}
return true;
}
void SQL_databaseCheck(void)
{
if (dbh) {
return;
}
infostream << "Database connection setup" << std::endl;
bool needsCreate = !fs::PathExists(dbp);
if (needsCreate) {
fs::CreateAllDirs(fs::RemoveLastPathComponent(dbp));
}
int dbo = sqlite3_open_v2(dbp.c_str(), &dbh, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
NULL);
if (dbo != SQLITE_OK) {
infostream << "SQLROLLBACK: SQLite3 database failed to open: "
<< sqlite3_errmsg(dbh) << std::endl;
throw FileNotGoodException("Cannot open database file");
}
if (needsCreate) {
SQL_createDatabase();
}
int dbr;
dbr = sqlite3_prepare_v2(dbh,
"INSERT INTO `action` ("
" `actor`, `timestamp`, `type`,"
" `list`, `index`, `add`, `stackNode`, `stackQuantity`, `nodeMeta`,"
" `x`, `y`, `z`,"
" `oldNode`, `oldParam1`, `oldParam2`, `oldMeta`,"
" `newNode`, `newParam1`, `newParam2`, `newMeta`,"
" `guessedActor`"
") VALUES ("
" ?, ?, ?,"
" ?, ?, ?, ?, ?, ?,"
" ?, ?, ?,"
" ?, ?, ?, ?,"
" ?, ?, ?, ?,"
" ?"
");",
-1, &dbs_insert, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(sqlite3_errmsg(dbh));
}
dbr = sqlite3_prepare_v2(dbh,
"REPLACE INTO `action` ("
" `actor`, `timestamp`, `type`,"
" `list`, `index`, `add`, `stackNode`, `stackQuantity`, `nodeMeta`,"
" `x`, `y`, `z`,"
" `oldNode`, `oldParam1`, `oldParam2`, `oldMeta`,"
" `newNode`, `newParam1`, `newParam2`, `newMeta`,"
" `guessedActor`, `id`"
") VALUES ("
" ?, ?, ?,"
" ?, ?, ?, ?, ?, ?,"
" ?, ?, ?,"
" ?, ?, ?, ?,"
" ?, ?, ?, ?,"
" ?, ?"
");",
-1, &dbs_replace, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(sqlite3_errmsg(dbh));
}
dbr = sqlite3_prepare_v2(dbh,
"SELECT"
" `actor`, `timestamp`, `type`,"
" `list`, `index`, `add`, `stackNode`, `stackQuantity`, `nodemeta`,"
" `x`, `y`, `z`,"
" `oldNode`, `oldParam1`, `oldParam2`, `oldMeta`,"
" `newNode`, `newParam1`, `newParam2`, `newMeta`,"
" `guessedActor`"
" FROM `action`"
" WHERE `timestamp` >= ?"
" ORDER BY `timestamp` DESC, `id` DESC",
-1, &dbs_select, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh,
"SELECT"
" `actor`, `timestamp`, `type`,"
" `list`, `index`, `add`, `stackNode`, `stackQuantity`, `nodemeta`,"
" `x`, `y`, `z`,"
" `oldNode`, `oldParam1`, `oldParam2`, `oldMeta`,"
" `newNode`, `newParam1`, `newParam2`, `newMeta`,"
" `guessedActor`"
" FROM `action`"
" WHERE `timestamp` >= ?"
" AND `x` IS NOT NULL"
" AND `y` IS NOT NULL"
" AND `z` IS NOT NULL"
" AND ABS(`x` - ?) <= ?"
" AND ABS(`y` - ?) <= ?"
" AND ABS(`z` - ?) <= ?"
" ORDER BY `timestamp` DESC, `id` DESC"
" LIMIT 0,?",
-1, &dbs_select_range, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh,
"SELECT"
" `actor`, `timestamp`, `type`,"
" `list`, `index`, `add`, `stackNode`, `stackQuantity`, `nodemeta`,"
" `x`, `y`, `z`,"
" `oldNode`, `oldParam1`, `oldParam2`, `oldMeta`,"
" `newNode`, `newParam1`, `newParam2`, `newMeta`,"
" `guessedActor`"
" FROM `action`"
" WHERE `timestamp` >= ?"
" AND `actor` = ?"
" ORDER BY `timestamp` DESC, `id` DESC",
-1, &dbs_select_withActor, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh, "SELECT `id`, `name` FROM `actor`", -1,
&dbs_knownActor_select, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh, "INSERT INTO `actor` (`name`) VALUES (?)", -1,
&dbs_knownActor_insert, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh, "SELECT `id`, `name` FROM `node`", -1,
&dbs_knownNode_select, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
dbr = sqlite3_prepare_v2(dbh, "INSERT INTO `node` (`name`) VALUES (?)", -1,
&dbs_knownNode_insert, NULL);
if (dbr != SQLITE_OK) {
throw FileNotGoodException(itos(dbr).c_str());
}
infostream << "SQL prepared statements setup correctly" << std::endl;
int select;
sqlite3_reset(dbs_knownActor_select);
while (SQLITE_ROW == (select = sqlite3_step(dbs_knownActor_select)))
registerNewActor(
sqlite3_column_int(dbs_knownActor_select, 0),
reinterpret_cast<const char *>(sqlite3_column_text(dbs_knownActor_select, 1))
);
sqlite3_reset(dbs_knownNode_select);
while (SQLITE_ROW == (select = sqlite3_step(dbs_knownNode_select)))
registerNewNode(
sqlite3_column_int(dbs_knownNode_select, 0),
reinterpret_cast<const char *>(sqlite3_column_text(dbs_knownNode_select, 1))
);
return;
}
bool SQL_registerRow(ActionRow row)
{
SQL_databaseCheck();
sqlite3_stmt * dbs_do = (row.id) ? dbs_replace : dbs_insert;
/*
std::cout
<< (row.id? "Replacing": "Inserting")
<< " ActionRow" << std::endl;
*/
sqlite3_reset(dbs_do);
int bind [22], ii = 0;
bool nodeMeta = false;
bind[ii++] = sqlite3_bind_int(dbs_do, 1, row.actor);
bind[ii++] = sqlite3_bind_int64(dbs_do, 2, row.timestamp);
bind[ii++] = sqlite3_bind_int(dbs_do, 3, row.type);
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK) {
std::string loc = row.location;
std::string locType = loc.substr(0, loc.find(":"));
nodeMeta = (locType == "nodemeta");
bind[ii++] = sqlite3_bind_text(dbs_do, 4, row.list.c_str(), row.list.size(), NULL);
bind[ii++] = sqlite3_bind_int(dbs_do, 5, row.index);
bind[ii++] = sqlite3_bind_int(dbs_do, 6, row.add);
bind[ii++] = sqlite3_bind_int(dbs_do, 7, row.stack.node);
bind[ii++] = sqlite3_bind_int(dbs_do, 8, row.stack.quantity);
bind[ii++] = sqlite3_bind_int(dbs_do, 9, (int) nodeMeta);
if (nodeMeta) {
std::string x, y, z;
int l, r;
l = loc.find(':') + 1;
r = loc.find(',');
x = loc.substr(l, r - l);
l = r + 1;
r = loc.find(',', l);
y = loc.substr(l, r - l);
z = loc.substr(r + 1);
bind[ii++] = sqlite3_bind_int(dbs_do, 10, atoi(x.c_str()));
bind[ii++] = sqlite3_bind_int(dbs_do, 11, atoi(y.c_str()));
bind[ii++] = sqlite3_bind_int(dbs_do, 12, atoi(z.c_str()));
}
} else {
bind[ii++] = sqlite3_bind_null(dbs_do, 4);
bind[ii++] = sqlite3_bind_null(dbs_do, 5);
bind[ii++] = sqlite3_bind_null(dbs_do, 6);
bind[ii++] = sqlite3_bind_null(dbs_do, 7);
bind[ii++] = sqlite3_bind_null(dbs_do, 8);
bind[ii++] = sqlite3_bind_null(dbs_do, 9);
}
if (row.type == RollbackAction::TYPE_SET_NODE) {
bind[ii++] = sqlite3_bind_int(dbs_do, 10, row.x);
bind[ii++] = sqlite3_bind_int(dbs_do, 11, row.y);
bind[ii++] = sqlite3_bind_int(dbs_do, 12, row.z);
bind[ii++] = sqlite3_bind_int(dbs_do, 13, row.oldNode);
bind[ii++] = sqlite3_bind_int(dbs_do, 14, row.oldParam1);
bind[ii++] = sqlite3_bind_int(dbs_do, 15, row.oldParam2);
bind[ii++] = sqlite3_bind_text(dbs_do, 16, row.oldMeta.c_str(), row.oldMeta.size(), NULL);
bind[ii++] = sqlite3_bind_int(dbs_do, 17, row.newNode);
bind[ii++] = sqlite3_bind_int(dbs_do, 18, row.newParam1);
bind[ii++] = sqlite3_bind_int(dbs_do, 19, row.newParam2);
bind[ii++] = sqlite3_bind_text(dbs_do, 20, row.newMeta.c_str(), row.newMeta.size(), NULL);
bind[ii++] = sqlite3_bind_int(dbs_do, 21, row.guessed ? 1 : 0);
} else {
if (!nodeMeta) {
bind[ii++] = sqlite3_bind_null(dbs_do, 10);
bind[ii++] = sqlite3_bind_null(dbs_do, 11);
bind[ii++] = sqlite3_bind_null(dbs_do, 12);
}
bind[ii++] = sqlite3_bind_null(dbs_do, 13);
bind[ii++] = sqlite3_bind_null(dbs_do, 14);
bind[ii++] = sqlite3_bind_null(dbs_do, 15);
bind[ii++] = sqlite3_bind_null(dbs_do, 16);
bind[ii++] = sqlite3_bind_null(dbs_do, 17);
bind[ii++] = sqlite3_bind_null(dbs_do, 18);
bind[ii++] = sqlite3_bind_null(dbs_do, 19);
bind[ii++] = sqlite3_bind_null(dbs_do, 20);
bind[ii++] = sqlite3_bind_null(dbs_do, 21);
}
if (row.id) {
bind[ii++] = sqlite3_bind_int(dbs_do, 22, row.id);
}
for (ii = 0; ii < 20; ++ii)
if (bind[ii] != SQLITE_OK)
infostream
<< "WARNING: failed to bind param " << ii + 1
<< " when inserting an entry in table setnode" << std::endl;
/*
std::cout << "========DB-WRITTEN==========" << std::endl;
std::cout << "id: " << row.id << std::endl;
std::cout << "actor: " << row.actor << std::endl;
std::cout << "time: " << row.timestamp << std::endl;
std::cout << "type: " << row.type << std::endl;
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK)
{
std::cout << "Location: " << row.location << std::endl;
std::cout << "List: " << row.list << std::endl;
std::cout << "Index: " << row.index << std::endl;
std::cout << "Add: " << row.add << std::endl;
std::cout << "Stack: " << row.stack << std::endl;
}
if (row.type == RollbackAction::TYPE_SET_NODE)
{
std::cout << "x: " << row.x << std::endl;
std::cout << "y: " << row.y << std::endl;
std::cout << "z: " << row.z << std::endl;
std::cout << "oldNode: " << row.oldNode << std::endl;
std::cout << "oldParam1: " << row.oldParam1 << std::endl;
std::cout << "oldParam2: " << row.oldParam2 << std::endl;
std::cout << "oldMeta: " << row.oldMeta << std::endl;
std::cout << "newNode: " << row.newNode << std::endl;
std::cout << "newParam1: " << row.newParam1 << std::endl;
std::cout << "newParam2: " << row.newParam2 << std::endl;
std::cout << "newMeta: " << row.newMeta << std::endl;
std::cout << "DESERIALIZE" << row.newMeta.c_str() << std::endl;
std::cout << "guessed: " << row.guessed << std::endl;
}
*/
int written = sqlite3_step(dbs_do);
return written == SQLITE_DONE;
//if (written != SQLITE_DONE)
// std::cout << "WARNING: rollback action not written: " << sqlite3_errmsg(dbh) << std::endl;
//else std::cout << "Action correctly inserted via SQL" << std::endl;
}
std::list<ActionRow> actionRowsFromSelect(sqlite3_stmt* stmt)
{
std::list<ActionRow> rows;
const unsigned char * text;
size_t size;
while (SQLITE_ROW == sqlite3_step(stmt)) {
ActionRow row;
row.actor = sqlite3_column_int(stmt, 0);
row.timestamp = sqlite3_column_int64(stmt, 1);
row.type = sqlite3_column_int(stmt, 2);
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK) {
text = sqlite3_column_text(stmt, 3);
size = sqlite3_column_bytes(stmt, 3);
row.list = std::string(reinterpret_cast<const char*>(text), size);
row.index = sqlite3_column_int(stmt, 4);
row.add = sqlite3_column_int(stmt, 5);
row.stack.node = sqlite3_column_int(stmt, 6);
row.stack.quantity = sqlite3_column_int(stmt, 7);
row.nodeMeta = sqlite3_column_int(stmt, 8);
}
if (row.type == RollbackAction::TYPE_SET_NODE || row.nodeMeta) {
row.x = sqlite3_column_int(stmt, 9);
row.y = sqlite3_column_int(stmt, 10);
row.z = sqlite3_column_int(stmt, 11);
}
if (row.type == RollbackAction::TYPE_SET_NODE) {
row.oldNode = sqlite3_column_int(stmt, 12);
row.oldParam1 = sqlite3_column_int(stmt, 13);
row.oldParam2 = sqlite3_column_int(stmt, 14);
text = sqlite3_column_text(stmt, 15);
size = sqlite3_column_bytes(stmt, 15);
row.oldMeta = std::string(reinterpret_cast<const char*>(text), size);
row.newNode = sqlite3_column_int(stmt, 16);
row.newParam1 = sqlite3_column_int(stmt, 17);
row.newParam2 = sqlite3_column_int(stmt, 18);
text = sqlite3_column_text(stmt, 19);
size = sqlite3_column_bytes(stmt, 19);
row.newMeta = std::string(reinterpret_cast<const char*>(text), size);
row.guessed = sqlite3_column_int(stmt, 20);
}
row.location = row.nodeMeta ? "nodemeta:" : getActorName(row.actor);
if (row.nodeMeta) {
row.location.append(itos(row.x));
row.location.append(",");
row.location.append(itos(row.y));
row.location.append(",");
row.location.append(itos(row.z));
}
/*
std::cout << "=======SELECTED==========" << "\n";
std::cout << "Actor: " << row.actor << "\n";
std::cout << "Timestamp: " << row.timestamp << "\n";
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK)
{
std::cout << "list: " << row.list << "\n";
std::cout << "index: " << row.index << "\n";
std::cout << "add: " << row.add << "\n";
std::cout << "stackNode: " << row.stack.node << "\n";
std::cout << "stackQuantity: " << row.stack.quantity << "\n";
if (row.nodeMeta)
{
std::cout << "X: " << row.x << "\n";
std::cout << "Y: " << row.y << "\n";
std::cout << "Z: " << row.z << "\n";
}
std::cout << "Location: " << row.location << "\n";
}
else
{
std::cout << "X: " << row.x << "\n";
std::cout << "Y: " << row.y << "\n";
std::cout << "Z: " << row.z << "\n";
std::cout << "oldNode: " << row.oldNode << "\n";
std::cout << "oldParam1: " << row.oldParam1 << "\n";
std::cout << "oldParam2: " << row.oldParam2 << "\n";
std::cout << "oldMeta: " << row.oldMeta << "\n";
std::cout << "newNode: " << row.newNode << "\n";
std::cout << "newParam1: " << row.newParam1 << "\n";
std::cout << "newParam2: " << row.newParam2 << "\n";
std::cout << "newMeta: " << row.newMeta << "\n";
std::cout << "guessed: " << row.guessed << "\n";
}
*/
rows.push_back(row);
}
return rows;
}
ActionRow actionRowFromRollbackAction(RollbackAction action)
{
ActionRow row;
row.id = 0;
row.actor = getActorId(action.actor);
row.timestamp = action.unix_time;
row.type = action.type;
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK) {
row.location = action.inventory_location;
row.list = action.inventory_list;
row.index = action.inventory_index;
row.add = action.inventory_add;
row.stack = getStackFromString(action.inventory_stack);
} else {
row.x = action.p.X;
row.y = action.p.Y;
row.z = action.p.Z;
row.oldNode = getNodeId(action.n_old.name);
row.oldParam1 = action.n_old.param1;
row.oldParam2 = action.n_old.param2;
row.oldMeta = action.n_old.meta;
row.newNode = getNodeId(action.n_new.name);
row.newParam1 = action.n_new.param1;
row.newParam2 = action.n_new.param2;
row.newMeta = action.n_new.meta;
row.guessed = action.actor_is_guess;
}
return row;
}
std::list<RollbackAction> rollbackActionsFromActionRows(std::list<ActionRow> rows)
{
std::list<RollbackAction> actions;
std::list<ActionRow>::const_iterator it;
for (it = rows.begin(); it != rows.end(); ++it) {
RollbackAction action;
action.actor = (it->actor) ? getActorName(it->actor) : "";
action.unix_time = it->timestamp;
action.type = static_cast<RollbackAction::Type>(it->type);
switch (action.type) {
case RollbackAction::TYPE_MODIFY_INVENTORY_STACK:
action.inventory_location = it->location.c_str();
action.inventory_list = it->list;
action.inventory_index = it->index;
action.inventory_add = it->add;
action.inventory_stack = getStringFromStack(it->stack);
break;
case RollbackAction::TYPE_SET_NODE:
action.p = v3s16(it->x, it->y, it->z);
action.n_old.name = getNodeName(it->oldNode);
action.n_old.param1 = it->oldParam1;
action.n_old.param2 = it->oldParam2;
action.n_old.meta = it->oldMeta;
action.n_new.name = getNodeName(it->newNode);
action.n_new.param1 = it->newParam1;
action.n_new.param2 = it->newParam2;
action.n_new.meta = it->newMeta;
break;
default:
throw ("W.T.F.");
break;
}
actions.push_back(action);
}
return actions;
}
std::list<ActionRow> SQL_getRowsSince(time_t firstTime, std::string actor = "")
{
sqlite3_stmt *dbs_stmt = (!actor.length()) ? dbs_select : dbs_select_withActor;
sqlite3_reset(dbs_stmt);
sqlite3_bind_int64(dbs_stmt, 1, firstTime);
if (actor.length()) {
sqlite3_bind_int(dbs_stmt, 2, getActorId(actor));
}
return actionRowsFromSelect(dbs_stmt);
}
std::list<ActionRow> SQL_getRowsSince_range(time_t firstTime, v3s16 p, int range,
int limit)
{
sqlite3_stmt *stmt = dbs_select_range;
sqlite3_reset(stmt);
sqlite3_bind_int64(stmt, 1, firstTime);
sqlite3_bind_int(stmt, 2, (int) p.X);
sqlite3_bind_int(stmt, 3, range);
sqlite3_bind_int(stmt, 4, (int) p.Y);
sqlite3_bind_int(stmt, 5, range);
sqlite3_bind_int(stmt, 6, (int) p.Z);
sqlite3_bind_int(stmt, 7, range);
sqlite3_bind_int(stmt, 8, limit);
return actionRowsFromSelect(stmt);
}
std::list<RollbackAction> SQL_getActionsSince_range(time_t firstTime, v3s16 p, int range,
int limit)
{
std::list<ActionRow> rows = SQL_getRowsSince_range(firstTime, p, range, limit);
return rollbackActionsFromActionRows(rows);
}
std::list<RollbackAction> SQL_getActionsSince(time_t firstTime, std::string actor = "")
{
std::list<ActionRow> rows = SQL_getRowsSince(firstTime, actor);
return rollbackActionsFromActionRows(rows);
}
void TXT_migrate(std::string filepath)
{
std::cout << "Migrating from rollback.txt to rollback.sqlite" << std::endl;
SQL_databaseCheck();
std::ifstream fh(filepath.c_str(), std::ios::in | std::ios::ate);
if (!fh.good()) {
throw ("DIE");
}
std::streampos filesize = fh.tellg();
if (filesize > 10) {
fh.seekg(0);
std::string bit;
int i = 0;
int id = 1;
time_t t = 0;
do {
ActionRow row;
row.id = id;
// Get the timestamp
std::getline(fh, bit, ' ');
bit = trim(bit);
if (!atoi(trim(bit).c_str())) {
std::getline(fh, bit);
continue;
}
row.timestamp = atoi(bit.c_str());
// Get the actor
row.actor = getActorId(trim(deSerializeJsonString(fh)));
// Get the action type
std::getline(fh, bit, '[');
std::getline(fh, bit, ' ');
if (bit == "modify_inventory_stack") {
row.type = RollbackAction::TYPE_MODIFY_INVENTORY_STACK;
}
if (bit == "set_node") {
row.type = RollbackAction::TYPE_SET_NODE;
}
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK) {
row.location = trim(deSerializeJsonString(fh));
std::getline(fh, bit, ' ');
row.list = trim(deSerializeJsonString(fh));
std::getline(fh, bit, ' ');
std::getline(fh, bit, ' ');
row.index = atoi(trim(bit).c_str());
std::getline(fh, bit, ' ');
row.add = (int)(trim(bit) == "add");
row.stack = getStackFromString(trim(deSerializeJsonString(fh)));
std::getline(fh, bit);
} else if (row.type == RollbackAction::TYPE_SET_NODE) {
std::getline(fh, bit, '(');
std::getline(fh, bit, ',');
row.x = atoi(trim(bit).c_str());
std::getline(fh, bit, ',');
row.y = atoi(trim(bit).c_str());
std::getline(fh, bit, ')');
row.z = atoi(trim(bit).c_str());
std::getline(fh, bit, ' ');
row.oldNode = getNodeId(trim(deSerializeJsonString(fh)));
std::getline(fh, bit, ' ');
std::getline(fh, bit, ' ');
row.oldParam1 = atoi(trim(bit).c_str());
std::getline(fh, bit, ' ');
row.oldParam2 = atoi(trim(bit).c_str());
row.oldMeta = trim(deSerializeJsonString(fh));
std::getline(fh, bit, ' ');
row.newNode = getNodeId(trim(deSerializeJsonString(fh)));
std::getline(fh, bit, ' ');
std::getline(fh, bit, ' ');
row.newParam1 = atoi(trim(bit).c_str());
std::getline(fh, bit, ' ');
row.newParam2 = atoi(trim(bit).c_str());
row.newMeta = trim(deSerializeJsonString(fh));
std::getline(fh, bit, ' ');
std::getline(fh, bit, ' ');
std::getline(fh, bit);
row.guessed = (int)(trim(bit) == "actor_is_guess");
}
/*
std::cout << "==========READ===========" << std::endl;
std::cout << "time: " << row.timestamp << std::endl;
std::cout << "actor: " << row.actor << std::endl;
std::cout << "type: " << row.type << std::endl;
if (row.type == RollbackAction::TYPE_MODIFY_INVENTORY_STACK)
{
std::cout << "Location: " << row.location << std::endl;
std::cout << "List: " << row.list << std::endl;
std::cout << "Index: " << row.index << std::endl;
std::cout << "Add: " << row.add << std::endl;
std::cout << "Stack: " << row.stack << std::endl;
}
if (row.type == RollbackAction::TYPE_SET_NODE)
{
std::cout << "x: " << row.x << std::endl;
std::cout << "y: " << row.y << std::endl;
std::cout << "z: " << row.z << std::endl;
std::cout << "oldNode: " << row.oldNode << std::endl;
std::cout << "oldParam1: " << row.oldParam1 << std::endl;
std::cout << "oldParam2: " << row.oldParam2 << std::endl;
std::cout << "oldMeta: " << row.oldMeta << std::endl;
std::cout << "newNode: " << row.newNode << std::endl;
std::cout << "newParam1: " << row.newParam1 << std::endl;
std::cout << "newParam2: " << row.newParam2 << std::endl;
std::cout << "newMeta: " << row.newMeta << std::endl;
std::cout << "guessed: " << row.guessed << std::endl;
}
*/
if (i == 0) {
t = time(0);
sqlite3_exec(dbh, "BEGIN", NULL, NULL, NULL);
}
SQL_registerRow(row);
++i;
if (time(0) - t) {
sqlite3_exec(dbh, "COMMIT", NULL, NULL, NULL);
t = time(0) - t;
std::cout
<< " Done: " << (int)(((float) fh.tellg() / (float) filesize) * 100) << "%"
<< " Speed: " << i / t << "/second \r" << std::flush;
i = 0;
}
++id;
} while (!fh.eof() && fh.good());
} else {
errorstream << "Empty rollback log" << std::endl;
}
std::cout
<< " Done: 100% " << std::endl
<< " Now you can delete the old rollback.txt file." << std::endl;
}
// Get nearness factor for subject's action for this action
// Return value: 0 = impossible, >0 = factor
static float getSuspectNearness(bool is_guess, v3s16 suspect_p, time_t suspect_t,
v3s16 action_p, time_t action_t)
{
// Suspect cannot cause things in the past
if (action_t < suspect_t) {
return 0; // 0 = cannot be
}
// Start from 100
int f = 100;
// Distance (1 node = -x points)
f -= POINTS_PER_NODE * intToFloat(suspect_p, 1).getDistanceFrom(intToFloat(action_p, 1));
// Time (1 second = -x points)
f -= 1 * (action_t - suspect_t);
// If is a guess, halve the points
if (is_guess) {
f *= 0.5;
}
// Limit to 0
if (f < 0) {
f = 0;
}
return f;
}
class RollbackManager: public IRollbackManager
{
public:
// IRollbackManager interface
void reportAction(const RollbackAction &action_) {
// Ignore if not important
if (!action_.isImportant(m_gamedef)) {
return;
}
RollbackAction action = action_;
action.unix_time = time(0);
// Figure out actor
action.actor = m_current_actor;
action.actor_is_guess = m_current_actor_is_guess;
if (action.actor.empty()) { // If actor is not known, find out suspect or cancel
v3s16 p;
if (!action.getPosition(&p)) {
return;
}
action.actor = getSuspect(p, 83, 1);
if (action.actor.empty()) {
return;
}
action.actor_is_guess = true;
}
infostream
<< "RollbackManager::reportAction():"
<< " time=" << action.unix_time
<< " actor=\"" << action.actor << "\""
<< (action.actor_is_guess ? " (guess)" : "")
<< " action=" << action.toString()
<< std::endl;
addAction(action);
}
std::string getActor() {
return m_current_actor;
}
bool isActorGuess() {
return m_current_actor_is_guess;
}
void setActor(const std::string &actor, bool is_guess) {
m_current_actor = actor;
m_current_actor_is_guess = is_guess;
}
std::string getSuspect(v3s16 p, float nearness_shortcut, float min_nearness) {
if (m_current_actor != "") {
return m_current_actor;
}
int cur_time = time(0);
time_t first_time = cur_time - (100 - min_nearness);
RollbackAction likely_suspect;
float likely_suspect_nearness = 0;
for (std::list<RollbackAction>::const_reverse_iterator
i = m_action_latest_buffer.rbegin();
i != m_action_latest_buffer.rend(); i++) {
if (i->unix_time < first_time) {
break;
}
if (i->actor == "") {
continue;
}
// Find position of suspect or continue
v3s16 suspect_p;
if (!i->getPosition(&suspect_p)) {
continue;
}
float f = getSuspectNearness(i->actor_is_guess, suspect_p,
i->unix_time, p, cur_time);
if (f >= min_nearness && f > likely_suspect_nearness) {
likely_suspect_nearness = f;
likely_suspect = *i;
if (likely_suspect_nearness >= nearness_shortcut) {
break;
}
}
}
// No likely suspect was found
if (likely_suspect_nearness == 0) {
return "";
}
// Likely suspect was found
return likely_suspect.actor;
}
void flush() {
infostream << "RollbackManager::flush()" << std::endl;
sqlite3_exec(dbh, "BEGIN", NULL, NULL, NULL);
std::list<RollbackAction>::const_iterator iter;
for (iter = m_action_todisk_buffer.begin();
iter != m_action_todisk_buffer.end();
iter++) {
if (iter->actor == "") {
continue;
}
SQL_registerRow(actionRowFromRollbackAction(*iter));
}
sqlite3_exec(dbh, "COMMIT", NULL, NULL, NULL);
m_action_todisk_buffer.clear();
}
RollbackManager(const std::string &filepath, IGameDef *gamedef):
m_filepath(filepath),
m_gamedef(gamedef),
m_current_actor_is_guess(false) {
infostream
<< "RollbackManager::RollbackManager(" << filepath << ")"
<< std::endl;
// Operate correctly in case of still being given rollback.txt as filepath
std::string directory = filepath.substr(0, filepath.rfind(DIR_DELIM) + 1);
std::string filenameOld = filepath.substr(filepath.rfind(DIR_DELIM) + 1);
std::string filenameNew = (filenameOld == "rollback.txt") ? "rollback.sqlite" :
filenameOld;
std::string filenameTXT = directory + "rollback.txt";
std::string migratingFlag = filepath + ".migrating";
infostream << "Directory: " << directory << std::endl;
infostream << "CheckFor: " << filenameTXT << std::endl;
infostream << "FileOld: " << filenameOld << std::endl;
infostream << "FileNew: " << filenameNew << std::endl;
dbp = directory + filenameNew;
if ((fs::PathExists(filenameTXT) && fs::PathExists(migratingFlag)) ||
(fs::PathExists(filenameTXT) && !fs::PathExists(dbp))) {
std::ofstream of(migratingFlag.c_str());
TXT_migrate(filenameTXT);
fs::DeleteSingleFileOrEmptyDirectory(migratingFlag);
}
SQL_databaseCheck();
}
~RollbackManager() {
infostream << "RollbackManager::~RollbackManager()" << std::endl;
flush();
}
void addAction(const RollbackAction &action) {
m_action_todisk_buffer.push_back(action);
m_action_latest_buffer.push_back(action);
// Flush to disk sometimes
if (m_action_todisk_buffer.size() >= 500) {
flush();
}
}
std::list<RollbackAction> getEntriesSince(time_t first_time) {
infostream
<< "RollbackManager::getEntriesSince(" << first_time << ")"
<< std::endl;
flush();
std::list<RollbackAction> result = SQL_getActionsSince(first_time);
return result;
}
std::list<RollbackAction> getNodeActors(v3s16 pos, int range, time_t seconds, int limit) {
time_t cur_time = time(0);
time_t first_time = cur_time - seconds;
return SQL_getActionsSince_range(first_time, pos, range, limit);
}
std::list<RollbackAction> getRevertActions(const std::string &actor_filter,
time_t seconds) {
infostream
<< "RollbackManager::getRevertActions(" << actor_filter
<< ", " << seconds << ")"
<< std::endl;
// Figure out time
time_t cur_time = time(0);
time_t first_time = cur_time - seconds;
flush();
std::list<RollbackAction> result = SQL_getActionsSince(first_time, actor_filter);
return result;
}
private:
std::string m_filepath;
IGameDef *m_gamedef;
std::string m_current_actor;
bool m_current_actor_is_guess;
std::list<RollbackAction> m_action_todisk_buffer;
std::list<RollbackAction> m_action_latest_buffer;
};
IRollbackManager *createRollbackManager(const std::string &filepath, IGameDef *gamedef)
{
return new RollbackManager(filepath, gamedef);
}
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