cmd/stcrashreceiver: Minor cleanup, stricter file permissions

cmd/stcrashreceiver/diskstore.go

@@ -40,7 +40,7 @@ type currentFile struct {
 }
 
 func (d *diskStore) Serve(ctx context.Context) {
-	if err := os.MkdirAll(d.dir, 0750); err != nil {
+	if err := os.MkdirAll(d.dir, 0o700); err != nil {
 		log.Println("Creating directory:", err)
 		return
 	}
@@ -60,7 +60,7 @@ func (d *diskStore) Serve(ctx context.Context) {
 		case entry := <-d.inbox:
 			path := d.fullPath(entry.path)
 
-			if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
+			if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil {
 				log.Println("Creating directory:", err)
 				continue
 			}
@@ -75,7 +75,7 @@ func (d *diskStore) Serve(ctx context.Context) {
 				log.Println("Failed to compress crash report:", err)
 				continue
 			}
-			if err := os.WriteFile(path, buf.Bytes(), 0644); err != nil {
+			if err := os.WriteFile(path, buf.Bytes(), 0o600); err != nil {
 				log.Printf("Failed to write %s: %v", entry.path, err)
 				_ = os.Remove(path)
 				continue

cmd/stcrashreceiver/main.go

@@ -21,7 +21,6 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"time"
 
 	"github.com/alecthomas/kong"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
@@ -34,14 +33,13 @@ import (
 const maxRequestSize = 1 << 20 // 1 MiB
 
 type cli struct {
-	Dir           string        `help:"Parent directory to store crash and failure reports in" env:"REPORTS_DIR" default:"."`
-	DSN           string        `help:"Sentry DSN" env:"SENTRY_DSN"`
-	Listen        string        `help:"HTTP listen address" default:":8080" env:"LISTEN_ADDRESS"`
-	MaxDiskFiles  int           `help:"Maximum number of reports on disk" default:"100000" env:"MAX_DISK_FILES"`
-	MaxDiskSizeMB int64         `help:"Maximum disk space to use for reports" default:"1024" env:"MAX_DISK_SIZE_MB"`
-	CleanInterval time.Duration `help:"Interval between cleaning up old reports" default:"12h" env:"CLEAN_INTERVAL"`
-	SentryQueue   int           `help:"Maximum number of reports to queue for sending to Sentry" default:"64" env:"SENTRY_QUEUE"`
-	DiskQueue     int           `help:"Maximum number of reports to queue for writing to disk" default:"64" env:"DISK_QUEUE"`
+	Dir           string `help:"Parent directory to store crash and failure reports in" env:"REPORTS_DIR" default:"."`
+	DSN           string `help:"Sentry DSN" env:"SENTRY_DSN"`
+	Listen        string `help:"HTTP listen address" default:":8080" env:"LISTEN_ADDRESS"`
+	MaxDiskFiles  int    `help:"Maximum number of reports on disk" default:"100000" env:"MAX_DISK_FILES"`
+	MaxDiskSizeMB int64  `help:"Maximum disk space to use for reports" default:"1024" env:"MAX_DISK_SIZE_MB"`
+	SentryQueue   int    `help:"Maximum number of reports to queue for sending to Sentry" default:"64" env:"SENTRY_QUEUE"`
+	DiskQueue     int    `help:"Maximum number of reports to queue for writing to disk" default:"64" env:"DISK_QUEUE"`
 }
 
 func main() {