mirror of
https://github.com/anope/anope.git
synced 2026-06-23 07:06:38 +02:00
Adam
315 lines
8.8 KiB
C++
315 lines
8.8 KiB
C++
/* RequiredLibraries: sqlite3 */
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#include "module.h"
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#include <sqlite3.h>
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#include "sql.h"
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/* SQLite3 API, based from InspiRCd */
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/** A SQLite result
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*/
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class SQLiteResult : public SQLResult
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{
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public:
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SQLiteResult(unsigned int i, const SQLQuery &q, const Anope::string &fq) : SQLResult(i, q, fq)
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{
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}
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SQLiteResult(const SQLQuery &q, const Anope::string &fq, const Anope::string &err) : SQLResult(0, q, fq, err)
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{
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}
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void addRow(const std::map<Anope::string, Anope::string> &data)
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{
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this->entries.push_back(data);
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}
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};
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/** A SQLite database, there can be multiple
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*/
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class SQLiteService : public SQLProvider
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{
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std::map<Anope::string, std::set<Anope::string> > active_schema;
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Anope::string database;
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sqlite3 *sql;
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Anope::string Escape(const Anope::string &query);
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public:
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SQLiteService(Module *o, const Anope::string &n, const Anope::string &d);
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~SQLiteService();
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void Run(SQLInterface *i, const SQLQuery &query) anope_override;
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SQLResult RunQuery(const SQLQuery &query);
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std::vector<SQLQuery> CreateTable(const Anope::string &table, const Serialize::Data &data) anope_override;
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SQLQuery BuildInsert(const Anope::string &table, unsigned int id, Serialize::Data &data);
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SQLQuery GetTables(const Anope::string &prefix);
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Anope::string BuildQuery(const SQLQuery &q);
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Anope::string FromUnixtime(time_t);
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};
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class ModuleSQLite : public Module
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{
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/* SQL connections */
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std::map<Anope::string, SQLiteService *> SQLiteServices;
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public:
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ModuleSQLite(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, SUPPORTED)
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{
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Implementation i[] = { I_OnReload };
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ModuleManager::Attach(i, this, sizeof(i) / sizeof(Implementation));
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OnReload();
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}
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~ModuleSQLite()
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{
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for (std::map<Anope::string, SQLiteService *>::iterator it = this->SQLiteServices.begin(); it != this->SQLiteServices.end(); ++it)
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delete it->second;
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SQLiteServices.clear();
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}
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void OnReload() anope_override
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{
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ConfigReader config;
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int i, num;
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for (std::map<Anope::string, SQLiteService *>::iterator it = this->SQLiteServices.begin(); it != this->SQLiteServices.end();)
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{
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const Anope::string &cname = it->first;
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SQLiteService *s = it->second;
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++it;
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for (i = 0, num = config.Enumerate("sqlite"); i < num; ++i)
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if (config.ReadValue("sqlite", "name", "sqlite/main", i) == cname)
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break;
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if (i == num)
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{
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Log(LOG_NORMAL, "sqlite") << "SQLite: Removing server connection " << cname;
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delete s;
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this->SQLiteServices.erase(cname);
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}
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}
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for (i = 0, num = config.Enumerate("sqlite"); i < num; ++i)
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{
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Anope::string connname = config.ReadValue("sqlite", "name", "sqlite/main", i);
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if (this->SQLiteServices.find(connname) == this->SQLiteServices.end())
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{
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Anope::string database = Anope::DataDir + "/" + config.ReadValue("sqlite", "database", "anope", i);
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try
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{
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SQLiteService *ss = new SQLiteService(this, connname, database);
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this->SQLiteServices[connname] = ss;
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Log(LOG_NORMAL, "sqlite") << "SQLite: Successfully added database " << database;
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}
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catch (const SQLException &ex)
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{
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Log(LOG_NORMAL, "sqlite") << "SQLite: " << ex.GetReason();
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}
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}
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}
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}
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};
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SQLiteService::SQLiteService(Module *o, const Anope::string &n, const Anope::string &d)
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: SQLProvider(o, n), database(d), sql(NULL)
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{
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int db = sqlite3_open_v2(database.c_str(), &this->sql, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0);
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if (db != SQLITE_OK)
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throw SQLException("Unable to open SQLite database " + database + ": " + sqlite3_errmsg(this->sql));
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}
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SQLiteService::~SQLiteService()
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{
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sqlite3_interrupt(this->sql);
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sqlite3_close(this->sql);
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}
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void SQLiteService::Run(SQLInterface *i, const SQLQuery &query)
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{
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SQLResult res = this->RunQuery(query);
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if (!res.GetError().empty())
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i->OnError(res);
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else
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i->OnResult(res);
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}
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SQLResult SQLiteService::RunQuery(const SQLQuery &query)
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{
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Anope::string real_query = this->BuildQuery(query);
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sqlite3_stmt *stmt;
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int err = sqlite3_prepare_v2(this->sql, real_query.c_str(), real_query.length(), &stmt, NULL);
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if (err != SQLITE_OK)
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return SQLiteResult(query, real_query, sqlite3_errmsg(this->sql));
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std::vector<Anope::string> columns;
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int cols = sqlite3_column_count(stmt);
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columns.resize(cols);
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for (int i = 0; i < cols; ++i)
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columns[i] = sqlite3_column_name(stmt, i);
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SQLiteResult result(0, query, real_query);
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while ((err = sqlite3_step(stmt)) == SQLITE_ROW)
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{
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std::map<Anope::string, Anope::string> items;
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for (int i = 0; i < cols; ++i)
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{
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const char *data = reinterpret_cast<const char *>(sqlite3_column_text(stmt, i));
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if (data && *data)
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items[columns[i]] = data;
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}
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result.addRow(items);
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}
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result.id = sqlite3_last_insert_rowid(this->sql);
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sqlite3_finalize(stmt);
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if (err != SQLITE_DONE)
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return SQLiteResult(query, real_query, sqlite3_errmsg(this->sql));
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return result;
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}
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std::vector<SQLQuery> SQLiteService::CreateTable(const Anope::string &table, const Serialize::Data &data)
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{
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std::vector<SQLQuery> queries;
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std::set<Anope::string> &known_cols = this->active_schema[table];
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if (known_cols.empty())
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{
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Log(LOG_DEBUG) << "m_sqlite: Fetching columns for " << table;
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SQLResult columns = this->RunQuery("PRAGMA table_info(" + table + ")");
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for (int i = 0; i < columns.Rows(); ++i)
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{
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const Anope::string &column = columns.Get(i, "name");
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Log(LOG_DEBUG) << "m_sqlite: Column #" << i << " for " << table << ": " << column;
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known_cols.insert(column);
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}
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}
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if (known_cols.empty())
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{
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Anope::string query_text = "CREATE TABLE `" + table + "` (`id` INTEGER PRIMARY KEY, `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP";
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for (Serialize::Data::const_iterator it = data.begin(), it_end = data.end(); it != it_end; ++it)
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{
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known_cols.insert(it->first);
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query_text += ", `" + it->first + "` ";
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if (it->second.GetType() == Serialize::DT_INT)
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query_text += "int(11)";
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else
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query_text += "text";
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}
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query_text += ")";
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queries.push_back(query_text);
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query_text = "CREATE UNIQUE INDEX `" + table + "_id_idx` ON `" + table + "` (`id`)";
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queries.push_back(query_text);
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query_text = "CREATE INDEX `" + table + "_timestamp_idx` ON `" + table + "` (`timestamp`)";
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queries.push_back(query_text);
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query_text = "CREATE TRIGGER `" + table + "_trigger` AFTER UPDATE ON `" + table + "` FOR EACH ROW BEGIN UPDATE `" + table + "` SET `timestamp` = CURRENT_TIMESTAMP WHERE `id` = `old.id`; end;";
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queries.push_back(query_text);
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}
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else
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for (Serialize::Data::const_iterator it = data.begin(), it_end = data.end(); it != it_end; ++it)
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{
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if (known_cols.count(it->first) > 0)
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continue;
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known_cols.insert(it->first);
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Anope::string query_text = "ALTER TABLE `" + table + "` ADD `" + it->first + "` ";
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if (it->second.GetType() == Serialize::DT_INT)
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query_text += "int(11)";
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else
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query_text += "text";
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queries.push_back(query_text);
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}
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return queries;
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}
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SQLQuery SQLiteService::BuildInsert(const Anope::string &table, unsigned int id, Serialize::Data &data)
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{
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/* Empty columns not present in the data set */
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const std::set<Anope::string> &known_cols = this->active_schema[table];
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for (std::set<Anope::string>::iterator it = known_cols.begin(), it_end = known_cols.end(); it != it_end; ++it)
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if (*it != "id" && *it != "timestamp" && data.count(*it) == 0)
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data[*it] << "";
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Anope::string query_text = "REPLACE INTO `" + table + "` (";
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if (id > 0)
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query_text += "`id`,";
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for (Serialize::Data::const_iterator it = data.begin(), it_end = data.end(); it != it_end; ++it)
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query_text += "`" + it->first + "`,";
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query_text.erase(query_text.length() - 1);
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query_text += ") VALUES (";
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if (id > 0)
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query_text += stringify(id) + ",";
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for (Serialize::Data::const_iterator it = data.begin(), it_end = data.end(); it != it_end; ++it)
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query_text += "@" + it->first + "@,";
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query_text.erase(query_text.length() - 1);
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query_text += ")";
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SQLQuery query(query_text);
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for (Serialize::Data::const_iterator it = data.begin(), it_end = data.end(); it != it_end; ++it)
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query.setValue(it->first, it->second.astr());
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return query;
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}
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SQLQuery SQLiteService::GetTables(const Anope::string &prefix)
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{
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return SQLQuery("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE '" + prefix + "%';");
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}
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Anope::string SQLiteService::Escape(const Anope::string &query)
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{
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char *e = sqlite3_mprintf("%q", query.c_str());
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Anope::string buffer = e;
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sqlite3_free(e);
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return buffer;
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}
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Anope::string SQLiteService::BuildQuery(const SQLQuery &q)
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{
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Anope::string real_query = q.query;
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for (std::map<Anope::string, QueryData>::const_iterator it = q.parameters.begin(), it_end = q.parameters.end(); it != it_end; ++it)
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real_query = real_query.replace_all_cs("@" + it->first + "@", (it->second.escape ? ("'" + this->Escape(it->second.data) + "'") : it->second.data));
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return real_query;
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}
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Anope::string SQLiteService::FromUnixtime(time_t t)
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{
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return "datetime('" + stringify(t) + "', 'unixepoch')";
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}
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MODULE_INIT(ModuleSQLite)
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