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|
package control
import (
"context"
"crypto/rand"
"encoding/hex"
"fmt"
"strings"
)
func SetNodeEnabled(node Node, enabled bool) Node {
node.Enabled = enabled
return node
}
func RotateNodeSecrets(node Node) (Node, error) {
for idx := range node.Protocols {
protocol := &node.Protocols[idx]
switch protocol.Type {
case "vless", "vmess":
if protocol.Auth == nil {
protocol.Auth = &AuthProfile{}
}
uuid, err := randomUUID()
if err != nil {
return node, err
}
protocol.Auth.UUID = uuid
case "shadowsocks":
if protocol.Auth == nil {
protocol.Auth = &AuthProfile{}
}
password, err := randomHex(16)
if err != nil {
return node, err
}
protocol.Auth.Password = password
case "hysteria2":
if err := ensureHysteria2Profile(protocol); err != nil {
return node, err
}
password, err := randomBase64(16)
if err != nil {
return node, err
}
protocol.Auth.Password = password
protocol.Hysteria2.UserPassword = password
obfsPassword, err := randomHex(32)
if err != nil {
return node, err
}
protocol.Hysteria2.ObfsPassword = obfsPassword
if protocol.Extra == nil {
protocol.Extra = map[string]any{}
}
protocol.Extra["obfs_password"] = obfsPassword
}
}
return node, nil
}
func AddSocks5Protocol(node Node, port int) (Node, error) {
if port <= 0 {
port = 54101
}
for _, protocol := range node.Protocols {
if protocol.Type == "socks5" || protocol.Type == "socks" {
return node, fmt.Errorf("node %s already has SOCKS5 enabled", node.ID)
}
}
node.Protocols = append(node.Protocols, ProtocolProfile{
Type: "socks5",
Enabled: true,
Port: port,
})
return node, nil
}
func DestroyNode(ctx context.Context, runner SSHExecutor, dnsClient DNSProvider, zone string, node Node, inventoryDir, stateDir string) []string {
var warnings []string
if dnsClient != nil && strings.TrimSpace(node.Domain) != "" && strings.HasSuffix(node.Domain, "."+zone) {
name := strings.TrimSuffix(node.Domain, "."+zone)
name = strings.TrimSuffix(name, ".")
if err := dnsClient.DeleteARecord(ctx, zone, name); err != nil {
warnings = append(warnings, "dns cleanup failed: "+err.Error())
}
}
if strings.TrimSpace(node.Host) != "" {
if _, err := runner.Run(ctx, node, RenderDestroyScript()); err != nil {
warnings = append(warnings, "remote cleanup failed: "+err.Error())
}
}
if err := DeleteNodeState(stateDir, node.ID); err != nil {
warnings = append(warnings, "state cleanup failed: "+err.Error())
}
if err := DeleteNodeFile(inventoryDir, node.ID); err != nil {
warnings = append(warnings, "inventory cleanup failed: "+err.Error())
}
return warnings
}
func UpgradeNode(ctx context.Context, runner SSHExecutor, node Node, stateDir string) (*NodeState, error) {
if _, err := BootstrapNode(ctx, runner, node, BootstrapOptions{
StateDir: stateDir,
DryRun: false,
}); err != nil {
return nil, err
}
state, err := CheckNode(ctx, runner, node, stateDir)
if state != nil {
if state.Metadata == nil {
state.Metadata = map[string]any{}
}
state.Metadata["lifecycle_action"] = "upgrade"
_ = SaveNodeState(stateDir, *state)
}
return state, err
}
func RepairReinstallNode(ctx context.Context, runner SSHExecutor, node Node, stateDir string) (*NodeState, error) {
return reinstallNode(ctx, runner, node, stateDir, "repair_reinstall")
}
func CleanReinstallNode(ctx context.Context, runner SSHExecutor, node Node, stateDir string) (*NodeState, error) {
return reinstallNode(ctx, runner, node, stateDir, "clean_reinstall")
}
func reinstallNode(ctx context.Context, runner SSHExecutor, node Node, stateDir, action string) (*NodeState, error) {
cleanupWarning := ""
if strings.TrimSpace(node.Host) != "" {
if _, err := runner.Run(ctx, node, RenderDestroyScript()); err != nil {
cleanupWarning = err.Error()
}
}
if _, err := BootstrapNode(ctx, runner, node, BootstrapOptions{
StateDir: stateDir,
DryRun: false,
}); err != nil {
return nil, err
}
state, err := CheckNode(ctx, runner, node, stateDir)
if state != nil {
if state.Metadata == nil {
state.Metadata = map[string]any{}
}
state.Metadata["lifecycle_action"] = action
if cleanupWarning != "" {
state.Metadata["cleanup_warning"] = cleanupWarning
}
_ = SaveNodeState(stateDir, *state)
}
return state, err
}
func RenderDestroyScript() string {
return `set -eu
if [ -f /opt/vpnem-node/current/docker-compose.yml ]; then
if command -v docker >/dev/null 2>&1 && docker compose version >/dev/null 2>&1; then
docker compose -f /opt/vpnem-node/current/docker-compose.yml down -v || true
elif command -v docker-compose >/dev/null 2>&1; then
docker-compose -f /opt/vpnem-node/current/docker-compose.yml down -v || true
fi
fi
rm -rf /opt/vpnem-node
printf 'vpnem-node removed\n'
`
}
func randomHex(size int) (string, error) {
buf := make([]byte, size)
if _, err := rand.Read(buf); err != nil {
return "", err
}
return hex.EncodeToString(buf), nil
}
func randomUUID() (string, error) {
buf := make([]byte, 16)
if _, err := rand.Read(buf); err != nil {
return "", err
}
buf[6] = (buf[6] & 0x0f) | 0x40
buf[8] = (buf[8] & 0x3f) | 0x80
hexID := hex.EncodeToString(buf)
return fmt.Sprintf("%s-%s-%s-%s-%s",
hexID[0:8],
hexID[8:12],
hexID[12:16],
hexID[16:20],
hexID[20:32],
), nil
}
func RandomHexForAPI(size int) (string, error) { return randomHex(size) }
func RandomBase64ForAPI(size int) (string, error) { return randomBase64(size) }
func RandomUUIDForAPI() (string, error) { return randomUUID() }
|
