First day's work on a modern BBS

SSH ONLY! \o/ SFTP! Oooh... JSON for "packets"! Yay.

.gitignore

@@ -1,3 +1,13 @@
+# ---> Lunar Hub
+# Configuration Files
+*.toml
+
+# Databases
+*.db
+
+# "Packets"
+*.json
+
 # ---> Go
 # Compiled Object files, Static and Dynamic libs (Shared Objects)
 *.o

README.md

@@ -1,3 +1,3 @@
-# LunarHub
+# Lunar Hub
 
-Go powered BBS
+Go powered BBS

config.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/pelletier/go-toml/v2"
+)
+
+type Config struct {
+	// System Identification
+
+	Name  string // The name to refer to this BBS
+	Sysop string // The name to identify the System Operator (SYSOP)
+
+	// Paths
+
+	DataPath    string // Path to users.db, and various *.toml config files
+	MessagePath string // Path to store *.db (for all message bases: local, NETWORKs)
+	FilePath    string // Path to store files (for both NETWORK-received, and local-received)
+	LogPath     string // Path to store *.log files (for lunarhub.log, and more)
+}
+
+func DefaultConfig() *Config {
+	cfg := &Config{
+		Name:  "Lunar Hub",
+		Sysop: "Sysop",
+
+		DataPath:    "data",
+		MessagePath: "msgs",
+		FilePath:    "files",
+		LogPath:     "logs",
+	}
+	cfg.Save()
+	return cfg
+}
+
+func LoadConfig() *Config {
+	in, err := os.ReadFile("lunar_hub.toml")
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return DefaultConfig()
+		} else {
+			panic(fmt.Errorf("load config >> %v", err))
+		}
+	}
+	var data map[string]any = map[string]any{}
+	err = toml.Unmarshal(in, &data)
+	if err != nil {
+		return DefaultConfig()
+	}
+	paths := data["Paths"].(map[string]any)
+	return &Config{
+		Name:        data["Name"].(string),
+		Sysop:       data["Sysop"].(string),
+		DataPath:    paths["Data"].(string),
+		MessagePath: paths["Messages"].(string),
+		FilePath:    paths["Files"].(string),
+		LogPath:     paths["Logs"].(string),
+	}
+}
+
+func (cfg *Config) Save() error {
+	f, err := os.Create("lunar_hub.toml")
+	if err != nil {
+		return err
+	}
+	now := time.Now().Truncate(time.Second).String()
+	f.WriteString("# Lunar Hub - Main Config\n")
+	f.WriteString("# Generated: " + now + "\n\n")
+	f.WriteString("Name = \"" + cfg.Name + "\"\n")
+	f.WriteString("Sysop = \"" + cfg.Sysop + "\"\n\n")
+	f.WriteString("[Paths]\n")
+	f.WriteString("\"Data\" = \"" + cfg.DataPath + "\"\n")
+	f.WriteString("\"Messages\" = \"" + cfg.MessagePath + "\"\n")
+	f.WriteString("\"Files\" = \"" + cfg.FilePath + "\"\n")
+	f.WriteString("\"Logs\" = \"" + cfg.LogPath + "\"\n")
+	return f.Close()
+}

db.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"time"
+)
+
+// MODIFIED gorm.Model definition
+type Model struct {
+	ID        uint64 `gorm:"primaryKey"`
+	CreatedAt time.Time
+	UpdatedAt time.Time
+	// DeletedAt gorm.DeletedAt `gorm:"index"` // I want records deleted, not flagged that it's deleted (This does mean data recovery is up-to SYSOP)
+}

go.mod

@@ -0,0 +1,17 @@
+module git.red-green.com/david/lunarhub
+
+go 1.24.5
+
+require (
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/kr/fs v0.1.0 // indirect
+	github.com/mattn/go-sqlite3 v1.14.22 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pkg/sftp v1.13.9 // indirect
+	golang.org/x/crypto v0.40.0 // indirect
+	golang.org/x/sys v0.34.0 // indirect
+	golang.org/x/text v0.27.0 // indirect
+	gorm.io/driver/sqlite v1.6.0 // indirect
+	gorm.io/gorm v1.30.0 // indirect
+)

go.sum

@@ -0,0 +1,98 @@
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main.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	Print("Lunar Hub - Startup")
+	Singletons()
+	var err error
+	USERS, err = NewUserManager()
+	if err != nil {
+		LOG.Fatalln("User Manager >>", err)
+	}
+	Print("Lunar Hub - Starting SSH Service")
+}

singletons.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"log"
+	"os"
+	"path"
+)
+
+var (
+	CFG   *Config
+	LOG   *log.Logger
+	USERS *UserManager
+)
+
+func Singletons() {
+	// Initialize Config
+	CFG = LoadConfig()
+
+	// Check Paths (Data, Messages, Files, and Logs)
+	if !Exists(CFG.DataPath) {
+		err := os.Mkdir(CFG.DataPath, os.ModeDir)
+		if err != nil {
+			panic("init >> mkdir data ('" + CFG.DataPath + "') >> " + err.Error())
+		}
+	}
+	if !Exists(CFG.MessagePath) {
+		err := os.Mkdir(CFG.MessagePath, os.ModeDir)
+		if err != nil {
+			panic("init >> mkdir msgs ('" + CFG.MessagePath + "') >> " + err.Error())
+		}
+	}
+	if !Exists(CFG.FilePath) {
+		err := os.Mkdir(CFG.FilePath, os.ModeDir)
+		if err != nil {
+			panic("init >> mkdir files ('" + CFG.FilePath + "') >> " + err.Error())
+		}
+	}
+	if !Exists(CFG.LogPath) {
+		err := os.Mkdir(CFG.LogPath, os.ModeDir)
+		if err != nil {
+			panic("init >> mkdir logs ('" + CFG.LogPath + "') >> " + err.Error())
+		}
+	}
+
+	// Establish connection to main Log file ('logs/lunar_hub.log')
+	log_path := path.Join(CFG.LogPath, "lunar_hub.log")
+	f, err := os.OpenFile(log_path, os.O_CREATE|os.O_APPEND|os.O_RDWR|os.O_SYNC, 0666)
+	if err != nil {
+		panic("init >> opening main log ('" + log_path + "') >> " + err.Error())
+	}
+	LOG = log.New(f, "", log.Ldate|log.Ltime|log.Lshortfile)
+	LOG.Println("")
+}

user.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"slices"
+	"time"
+)
+
+type User struct {
+	Model
+
+	Handle  string   // Handle/Nickname for User
+	Name    string   // Can be in any format (including left blank!)
+	PrimKey string   // User's Public SSH Key
+	Email   string   // User's Email Address (Used for account recovery, and push notifications)
+	Flags   []string // Flags are words to define certain things ('adult', 'new', 'sysop', and more)
+}
+
+func (u *User) HasFlag(flag string) bool {
+	return slices.Contains(u.Flags, flag)
+}
+
+func (u *User) AddFlag(flag string) {
+	if u.HasFlag(flag) {
+		return
+	}
+	u.Flags = append(u.Flags, flag)
+}
+
+func (u *User) RemoveFlag(flag string) {
+	if !u.HasFlag(flag) {
+		return
+	}
+	var flags []string = make([]string, 0, len(u.Flags)-1)
+	for _, f := range u.Flags {
+		if f != flag {
+			flags = append(flags, f)
+		}
+	}
+	u.Flags = flags
+}
+
+func (u *User) ClearFlags() {
+	u.Flags = []string{}
+}
+
+func (u *User) LastOn() time.Duration {
+	return time.Since(u.UpdatedAt).Round(time.Second)
+}
+
+func (u *User) Joined() time.Duration {
+	return time.Since(u.CreatedAt).Round(time.Second)
+}

user_db.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"path"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+// Manages the User Database
+//
+// Default location is 'data/users.db'
+type UserManager struct {
+	db *gorm.DB
+}
+
+func NewUserManager() (*UserManager, error) {
+	var (
+		um  *UserManager = &UserManager{}
+		err error
+	)
+	um.db, err = gorm.Open(sqlite.Open(path.Join(CFG.DataPath, "users.db")), &gorm.Config{})
+	if err != nil {
+		return nil, err
+	}
+	err = um.db.AutoMigrate(&User{})
+	if err != nil {
+		return nil, err
+	}
+	return um, err
+}
+
+func (um *UserManager) Close() error {
+	sqldb, err := um.db.DB()
+	if err != nil {
+		return err
+	}
+	return sqldb.Close()
+}
+
+func (um *UserManager) FindByHandle(handle string) (*User, error) {
+	var u *User
+	tx := um.db.First(u, "handle = ?", handle)
+	return u, tx.Error
+}
+
+func (um *UserManager) SaveUser(u *User) error {
+	tx := um.db.Save(u)
+	return tx.Error
+}
+
+func (um *UserManager) DeleteUser(u *User) error {
+	tx := um.db.Delete(u)
+	if tx.Error != nil {
+		return tx.Error
+	}
+	u = nil
+	return nil
+}

utils.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func Exists(path string) bool {
+	var err error
+	_, err = os.Stat(path)
+	return err == nil
+}
+
+func Print(a ...any) {
+	fmt.Println(a...)
+	LOG.Println(a...)
+}