all: add permcheck, client fix; imp chlog

internal/filtering/path.go

@@ -0,0 +1,37 @@
+package filtering
+
+import (
+	"fmt"
+	"path/filepath"
+)
+
+// pathMatchesAny returns true if filePath matches one of globs.  globs must be
+// valid.  filePath must be absolute and clean.  If globs are empty,
+// pathMatchesAny returns false.
+//
+// TODO(a.garipov): Move to golibs?
+func pathMatchesAny(globs []string, filePath string) (ok bool) {
+	if len(globs) == 0 {
+		return false
+	}
+
+	clean, err := filepath.Abs(filePath)
+	if err != nil {
+		panic(fmt.Errorf("pathMatchesAny: %w", err))
+	} else if clean != filePath {
+		panic(fmt.Errorf("pathMatchesAny: filepath %q is not absolute", filePath))
+	}
+
+	for _, g := range globs {
+		ok, err = filepath.Match(g, filePath)
+		if err != nil {
+			panic(fmt.Errorf("pathMatchesAny: bad pattern: %w", err))
+		}
+
+		if ok {
+			return true
+		}
+	}
+
+	return false
+}