Shuffle the modules about a bit.

1 files changed, 280 insertions, 0 deletions

diff --git a/modules/extra/sqlite3.cpp b/modules/extra/sqlite3.cpp
new file mode 100644
index 000000000..0843e20be
--- /dev/null
+++ b/modules/extra/sqlite3.cpp
@@ -0,0 +1,280 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2015 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2013-2014, 2016-2017, 2019-2024 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ *   Copyright (C) 2012 Adam <Adam@anope.org>
+ *   Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007, 2009 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *
+ * 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: find_compiler_flags("sqlite3")
+/// $LinkerFlags: find_linker_flags("sqlite3")
+
+/// $PackageInfo: require_system("alpine") pkgconf sqlite-dev
+/// $PackageInfo: require_system("arch") pkgconf sqlite
+/// $PackageInfo: require_system("darwin") pkg-config sqlite
+/// $PackageInfo: require_system("debian~") libsqlite3-dev pkg-config
+/// $PackageInfo: require_system("rhel~") pkgconfig sqlite-devel
+
+#include "inspircd.h"
+#include "modules/sql.h"
+#include "utility/string.h"
+
+#include <sqlite3.h>
+
+#ifdef _WIN32
+# pragma comment(lib, "sqlite3.lib")
+#endif
+
+class SQLConn;
+typedef insp::flat_map<std::string, SQLConn*> ConnMap;
+
+class SQLite3Result final
+	: public SQL::Result
+{
+public:
+	int currentrow = 0;
+	int rows = 0;
+	std::vector<std::string> columns;
+	std::vector<SQL::Row> fieldlists;
+
+	int Rows() override
+	{
+		return rows;
+	}
+
+	bool GetRow(SQL::Row& result) override
+	{
+		if (currentrow < rows)
+		{
+			result.assign(fieldlists[currentrow].begin(), fieldlists[currentrow].end());
+			currentrow++;
+			return true;
+		}
+		else
+		{
+			result.clear();
+			return false;
+		}
+	}
+
+	void GetCols(std::vector<std::string>& result) override
+	{
+		result.assign(columns.begin(), columns.end());
+	}
+
+	bool HasColumn(const std::string& column, size_t& index) override
+	{
+		for (size_t i = 0; i < columns.size(); ++i)
+		{
+			if (columns[i] == column)
+			{
+				index = i;
+				return true;
+			}
+		}
+		return false;
+	}
+};
+
+class SQLConn final
+	: public SQL::Provider
+{
+	sqlite3* conn;
+	std::shared_ptr<ConfigTag> config;
+
+public:
+	SQLConn(Module* Parent, const std::shared_ptr<ConfigTag>& tag)
+		: SQL::Provider(Parent, tag->getString("id"))
+		, config(tag)
+	{
+		std::string host = tag->getString("hostname");
+		if (sqlite3_open_v2(host.c_str(), &conn, SQLITE_OPEN_READWRITE, nullptr) != SQLITE_OK)
+		{
+			// Even in case of an error conn must be closed
+			sqlite3_close(conn);
+			conn = nullptr;
+			ServerInstance->Logs.Critical(MODNAME, "WARNING: Could not open DB with id: " + tag->getString("id"));
+		}
+	}
+
+	~SQLConn() override
+	{
+		if (conn)
+		{
+			sqlite3_interrupt(conn);
+			sqlite3_close(conn);
+		}
+	}
+
+	void Query(SQL::Query* query, const std::string& q)
+	{
+		SQLite3Result res;
+		sqlite3_stmt* stmt;
+		int err = sqlite3_prepare_v2(conn, q.c_str(), static_cast<int>(q.length()), &stmt, nullptr);
+		if (err != SQLITE_OK)
+		{
+			SQL::Error error(SQL::QSEND_FAIL, sqlite3_errmsg(conn));
+			query->OnError(error);
+			return;
+		}
+		int cols = sqlite3_column_count(stmt);
+		res.columns.resize(cols);
+		for(int i=0; i < cols; i++)
+		{
+			res.columns[i] = sqlite3_column_name(stmt, i);
+		}
+		while (true)
+		{
+			err = sqlite3_step(stmt);
+			if (err == SQLITE_ROW)
+			{
+				// Add the row
+				res.fieldlists.resize(res.rows + 1);
+				res.fieldlists[res.rows].resize(cols);
+				for(int i=0; i < cols; i++)
+				{
+					const char* txt = (const char*)sqlite3_column_text(stmt, i);
+					if (txt)
+						res.fieldlists[res.rows][i] = txt;
+				}
+				res.rows++;
+			}
+			else if (err == SQLITE_DONE)
+			{
+				query->OnResult(res);
+				break;
+			}
+			else
+			{
+				SQL::Error error(SQL::QREPLY_FAIL, sqlite3_errmsg(conn));
+				query->OnError(error);
+				break;
+			}
+		}
+		sqlite3_finalize(stmt);
+	}
+
+	void Submit(SQL::Query* query, const std::string& q) override
+	{
+		ServerInstance->Logs.Debug(MODNAME, "Executing SQLite3 query: " + q);
+		Query(query, q);
+		delete query;
+	}
+
+	void Submit(SQL::Query* query, const std::string& q, const SQL::ParamList& p) override
+	{
+		std::string res;
+		unsigned int param = 0;
+		for (const auto chr : q)
+		{
+			if (chr != '?')
+				res.push_back(chr);
+			else
+			{
+				if (param < p.size())
+				{
+					char* escaped = sqlite3_mprintf("%q", p[param++].c_str());
+					res.append(escaped);
+					sqlite3_free(escaped);
+				}
+			}
+		}
+		Submit(query, res);
+	}
+
+	void Submit(SQL::Query* query, const std::string& q, const SQL::ParamMap& p) 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())
+				{
+					char* escaped = sqlite3_mprintf("%q", it->second.c_str());
+					res.append(escaped);
+					sqlite3_free(escaped);
+				}
+			}
+		}
+		Submit(query, res);
+	}
+};
+
+class ModuleSQLite3 final
+	: public Module
+{
+private:
+	ConnMap conns;
+
+public:
+	ModuleSQLite3()
+		: Module(VF_VENDOR, "Provides the ability for SQL modules to query a SQLite 3 database.")
+	{
+	}
+
+	~ModuleSQLite3() override
+	{
+		ClearConns();
+	}
+
+	void init() override
+	{
+		ServerInstance->Logs.Normal(MODNAME, "Module was compiled against SQLite version {} and is running against version {}",
+			SQLITE_VERSION, sqlite3_libversion());
+	}
+
+	void ClearConns()
+	{
+		for (const auto& [_, conn] : conns)
+		{
+			ServerInstance->Modules.DelService(*conn);
+			delete conn;
+		}
+		conns.clear();
+	}
+
+	void ReadConfig(ConfigStatus& status) override
+	{
+		ClearConns();
+
+		for (const auto& [_, tag] : ServerInstance->Config->ConfTags("database"))
+		{
+			if (!insp::equalsci(tag->getString("module"), "sqlite"))
+				continue;
+
+			auto* conn = new SQLConn(this, tag);
+			conns.emplace(tag->getString("id"), conn);
+			ServerInstance->Modules.AddService(*conn);
+		}
+	}
+};
+
+MODULE_INIT(ModuleSQLite3)