Initial converter

.gitignore

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+multiserver_converter

converter.go

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+/*
+multiserver_converter is a utility designed to convert MT authentication
+databases to the multiserver authentication database scheme
+
+Usage:
+	multiserver_converter <in> <out>
+where in is the path to the MT auth database
+and out is the desired path to the newly created database
+*/
+package main
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"os"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func convertDB(in, out string) error {
+	db, err := sql.Open("sqlite3", in)
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	db2, err := sql.Open("sqlite3", out)
+	if err != nil {
+		return err
+	}
+	defer db2.Close()
+
+	if _, err := db2.Exec(`
+	CREATE TABLE auth (
+		name VARCHAR(32) NOT NULL,
+		password VARCHAR(512) NOT NULL
+	);
+	CREATE TABLE privileges (
+		name VARCHAR(32) NOT NULL,
+		privileges VARCHAR(1024)
+	);
+	CREATE TABLE ban (
+		addr VARCHAR(39) NOT NULL,
+		name VARCHAR(32) NOT NULL
+	);`); err != nil {
+		return err
+	}
+
+	result := db.QueryRow("SELECT name, password FROM auth;")
+
+	for {
+		var name, password string
+
+		err := result.Scan(&name, &password)
+		if err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				break
+			}
+
+			return err
+		}
+
+		_, err = db2.Exec(`INSERT INTO auth (
+			name, password
+		) VALUES (
+			?,
+			?
+		);`, name, password)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Println("Usage: multiserver_converter <in> <out>")
+		os.Exit(1)
+	}
+
+	if err := convertDB(os.Args[1], os.Args[2]); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	fmt.Println("Database converted successfully")
+}

go.mod

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+module github.com/HimbeerserverDE/multiserver/multiserver_converter
+
+go 1.16
+
+require github.com/mattn/go-sqlite3 v1.14.7

go.sum

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+github.com/mattn/go-sqlite3 v1.14.7 h1:fxWBnXkxfM6sRiuH3bqJ4CfzZojMOLVc0UTsTglEghA=
+github.com/mattn/go-sqlite3 v1.14.7/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=