updated for changed config structure

cmd/server/config.go

@@ -2,20 +2,23 @@ package main
 
 import (
 	"fmt"
+	"os"
+	"strings"
 
 	"github.com/BurntSushi/toml"
 )
 
-type Config struct {
-	CacheRoot     string     `toml:"cache_root"`
-	MirrorURLs    []string   `toml:"mirror_urls"`
-	MirroredRepos []string   `toml:"mirrored_repos"`
-	Port          string     `toml:"port"`
-	Auth          AuthConfig `toml:"auth"`
+type rawConfig struct {
+	Config
+	EnvFile string `toml:"env_file"`
 }
 
-type AuthConfig struct {
-	Token string `toml:"token"`
+type Config struct {
+	CacheRoot     string   `toml:"cache_root"`
+	MirrorURLs    []string `toml:"mirror_urls"`
+	MirroredRepos []string `toml:"mirrored_repos"`
+	Port          string   `toml:"port"`
+	Token         string
 }
 
 /* Function kept for reference for future logic
@@ -31,12 +34,19 @@ func NewConfig() *Config {
 
 func ReadConfig(path string) (*Config, error) {
 
-	var cfg Config
-	_, err := toml.DecodeFile(path, &cfg)
+	var rawcfg rawConfig
+	_, err := toml.DecodeFile(path, &rawcfg)
 	if err != nil {
 		return nil, fmt.Errorf("error loading config from %s: %w", path, err)
 	}
 
+	cfg := rawcfg.Config
+
+	err = cfg.loadToken(rawcfg.EnvFile)
+	if err != nil {
+		return nil, fmt.Errorf("error getting token: %v", err)
+	}
+
 	if err = cfg.validate(); err != nil {
 		return nil, fmt.Errorf("invalid config: %w", err)
 	}
@@ -44,6 +54,32 @@ func ReadConfig(path string) (*Config, error) {
 	return &cfg, nil
 }
 
+func (c *Config) loadToken(path string) error {
+
+	info, err := os.Stat(path)
+	if err != nil {
+		return fmt.Errorf("failed to stat env file: %v", err)
+	}
+
+	if info.Mode().Perm() != 0600 {
+		return fmt.Errorf("env file perms not secure, expected 0600 got %o", info.Mode().Perm())
+	}
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return fmt.Errorf("failed to read env file: %v", err)
+	}
+
+	key, val, ok := strings.Cut(strings.TrimSpace(string(data)), "=")
+	if !ok || key != "PKGSTASH_TOKEN" {
+		return fmt.Errorf("invalid env file format")
+	}
+
+	c.Token = val
+	return nil
+
+}
+
 func (c *Config) validate() error {
 	if c.CacheRoot == "" {
 		return fmt.Errorf("cache root is required")
@@ -57,7 +93,7 @@ func (c *Config) validate() error {
 	if c.Port == "" {
 		return fmt.Errorf("port required")
 	}
-	if c.Auth.Token == "" {
+	if c.Token == "" || c.Token == "changeme" {
 		return fmt.Errorf("auth token is required")
 	}
 	return nil