X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;ds=sidebyside;f=cmd%2Fsafcm%2Ffixperms.go;fp=cmd%2Fsafcm%2Ffixperms.go;h=6770934f14d176f7ab15f413ea1d9ce8f0accbd3;hb=f2f2bc47e8729548f3c10117f7f008b547c4afc5;hp=0000000000000000000000000000000000000000;hpb=dc0d431a778a50e6732b9eb91384a07a207b772d;p=safcm%2Fsafcm.git

diff --git a/cmd/safcm/fixperms.go b/cmd/safcm/fixperms.go
new file mode 100644
index 0000000..6770934
--- /dev/null
+++ b/cmd/safcm/fixperms.go
@@ -0,0 +1,99 @@
+// "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
+}