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package control
import (
"errors"
"fmt"
"io/fs"
"os"
"path/filepath"
"sort"
"strings"
"gopkg.in/yaml.v3"
)
type Inventory struct {
Nodes []Node
}
func LoadInventoryDir(dir string) (*Inventory, error) {
entries, err := os.ReadDir(dir)
if err != nil {
return nil, err
}
nodes := make([]Node, 0, len(entries))
for _, entry := range entries {
if entry.IsDir() {
continue
}
ext := strings.ToLower(filepath.Ext(entry.Name()))
if ext != ".yaml" && ext != ".yml" {
continue
}
node, err := LoadNodeFile(filepath.Join(dir, entry.Name()))
if err != nil {
return nil, err
}
nodes = append(nodes, *node)
}
sort.Slice(nodes, func(i, j int) bool {
return nodes[i].ID < nodes[j].ID
})
return &Inventory{Nodes: nodes}, nil
}
func LoadNodeFile(path string) (*Node, error) {
data, err := os.ReadFile(path)
if err != nil {
return nil, err
}
var node Node
if err := yaml.Unmarshal(data, &node); err != nil {
return nil, fmt.Errorf("parse %s: %w", path, err)
}
for idx := range node.Protocols {
if err := ensureRealityProfile(&node.Protocols[idx]); err != nil {
return nil, fmt.Errorf("prepare %s: %w", path, err)
}
if err := ensureHysteria2Profile(&node.Protocols[idx]); err != nil {
return nil, fmt.Errorf("prepare %s: %w", path, err)
}
}
if err := ValidateNode(node); err != nil {
return nil, fmt.Errorf("validate %s: %w", path, err)
}
return &node, nil
}
func SaveNodeFile(dir string, node Node) (string, error) {
for idx := range node.Protocols {
if err := ensureRealityProfile(&node.Protocols[idx]); err != nil {
return "", err
}
if err := ensureHysteria2Profile(&node.Protocols[idx]); err != nil {
return "", err
}
}
if err := ValidateNode(node); err != nil {
return "", err
}
if err := os.MkdirAll(dir, 0o755); err != nil {
return "", err
}
path := filepath.Join(dir, node.ID+".yaml")
data, err := yaml.Marshal(node)
if err != nil {
return "", err
}
if err := os.WriteFile(path, data, 0o600); err != nil {
return "", err
}
return path, nil
}
func (i *Inventory) NodeByID(id string) (*Node, bool) {
for idx := range i.Nodes {
if i.Nodes[idx].ID == id {
return &i.Nodes[idx], true
}
}
return nil, false
}
func ValidateNode(node Node) error {
if strings.TrimSpace(node.ID) == "" {
return errors.New("id is required")
}
if strings.TrimSpace(node.Name) == "" {
return errors.New("name is required")
}
if strings.TrimSpace(node.Region) == "" {
return errors.New("region is required")
}
if strings.TrimSpace(node.Host) == "" {
return errors.New("host is required")
}
if node.SSH.Port < 0 || node.SSH.Port > 65535 {
return errors.New("ssh.port must be between 0 and 65535")
}
if node.SSH.Port == 0 {
node.SSH.Port = 22
}
if strings.TrimSpace(node.SSH.User) == "" {
return errors.New("ssh.user is required")
}
if strings.TrimSpace(node.SSH.Auth) == "" {
return errors.New("ssh.auth is required")
}
switch strings.TrimSpace(node.SSH.Auth) {
case "key":
if strings.TrimSpace(node.SSH.IdentityFile) == "" {
return errors.New("ssh.identity_file is required when ssh.auth=key")
}
case "password":
if strings.TrimSpace(node.SSH.PasswordEnv) == "" {
return errors.New("ssh.password_env is required when ssh.auth=password")
}
default:
return errors.New("ssh.auth must be either key or password")
}
if len(node.Protocols) == 0 {
return errors.New("at least one protocol is required")
}
seen := make(map[string]struct{}, len(node.Protocols))
for _, protocol := range node.Protocols {
if strings.TrimSpace(protocol.Type) == "" {
return errors.New("protocol.type is required")
}
if protocol.Port <= 0 || protocol.Port > 65535 {
return fmt.Errorf("protocol %s has invalid port", protocol.Type)
}
if protocol.Type == "vless" && protocol.TLS != nil && protocol.TLS.Enabled && strings.TrimSpace(node.Domain) == "" {
return errors.New("vless with tls.enabled requires node.domain")
}
if protocol.Type == "vless-reality" {
if protocol.Auth == nil || strings.TrimSpace(protocol.Auth.UUID) == "" {
return errors.New("vless-reality requires auth.uuid")
}
if protocol.Reality == nil {
return errors.New("vless-reality requires reality settings")
}
if strings.TrimSpace(protocol.Reality.ServerName) == "" {
return errors.New("vless-reality requires reality.server_name")
}
if strings.TrimSpace(protocol.Reality.PrivateKey) == "" {
return errors.New("vless-reality requires reality.private_key")
}
if strings.TrimSpace(protocol.Reality.PublicKey) == "" {
return errors.New("vless-reality requires reality.public_key")
}
if strings.TrimSpace(protocol.Reality.ShortID) == "" {
return errors.New("vless-reality requires reality.short_id")
}
}
if protocol.Type == "vmess" && protocol.TLS != nil && protocol.TLS.Enabled && strings.TrimSpace(node.Domain) == "" {
return errors.New("vmess with tls.enabled requires node.domain")
}
if protocol.Type == "hysteria2" {
if protocol.Auth == nil || strings.TrimSpace(protocol.Auth.Password) == "" {
return errors.New("hysteria2 requires auth.password")
}
if protocol.Hysteria2 == nil {
return errors.New("hysteria2 requires hysteria2 settings")
}
if protocol.Hysteria2.CertPath == "" || protocol.Hysteria2.KeyPath == "" {
return errors.New("hysteria2 requires cert_path and key_path")
}
}
key := protocol.Type
if _, ok := seen[key]; ok {
return fmt.Errorf("duplicate protocol %s", protocol.Type)
}
seen[key] = struct{}{}
}
return nil
}
func CopyNodeFile(srcPath, inventoryDir string) (string, error) {
node, err := LoadNodeFile(srcPath)
if err != nil {
return "", err
}
return SaveNodeFile(inventoryDir, *node)
}
func DeleteNodeFile(dir, nodeID string) error {
err := os.Remove(filepath.Join(dir, nodeID+".yaml"))
if errors.Is(err, fs.ErrNotExist) {
return nil
}
return err
}
func IsNotExist(err error) bool {
return errors.Is(err, fs.ErrNotExist)
}
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