+// "fixperms" sub-command: apply proper permissions in files/ directories
+
+// Copyright (C) 2021 Simon Ruderich
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+ "fmt"
+ "io/fs"
+ "log"
+ "os"
+ "path/filepath"
+
+ "ruderich.org/simon/safcm/cmd/safcm/config"
+)
+
+func MainFixperms() error {
+ _, _, _, err := LoadBaseFiles()
+ if err != nil {
+ return fmt.Errorf("not in a safcm directory: %v", err)
+ }
+
+ xs, err := os.ReadDir(".")
+ if err != nil {
+ return err
+ }
+ for _, x := range xs {
+ if !x.IsDir() {
+ continue
+ }
+ path := filepath.Join(x.Name(), "files")
+
+ err := filepath.WalkDir(path, fixpermsWalkDirFunc)
+ if err != nil {
+ if os.IsNotExist(err) {
+ continue
+ }
+ return fmt.Errorf("%s: %v", path, err)
+ }
+ }
+
+ return nil
+}
+
+func fixpermsWalkDirFunc(path string, d fs.DirEntry, err error) error {
+ if err != nil {
+ return err
+ }
+
+ info, err := d.Info()
+ if err != nil {
+ return err
+ }
+ typ := info.Mode().Type()
+ perm := config.FileModeToFullPerm(info.Mode())
+
+ if typ == 0 /* regular file */ {
+ if perm != 0644 && perm != 0755 {
+ if perm&0111 != 0 /* executable */ {
+ perm = 0755
+ } else {
+ perm = 0644
+ }
+ log.Printf("chmodding %q to %#o", path, perm)
+ // This is safe because perm does not include
+ // setuid/setgid/sticky which use different values in
+ // FileMode.
+ err := os.Chmod(path, fs.FileMode(perm))
+ if err != nil {
+ return err
+ }
+ }
+ } else if typ == fs.ModeDir {
+ if perm != 0755 {
+ perm = 0755
+ log.Printf("chmodding %q to %#o", path, perm)
+ err := os.Chmod(path, fs.FileMode(perm))
+ if err != nil {
+ return err
+ }
+ }
+ }
+ // Other file types are caught by regular "sync"
+
+ return nil
+}