X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fcustom-validators%2Fmisc.ts;h=3ef38fce1d0b135625647e24dfbbd3671d86595a;hb=7cd4d2ba10106c10602c86f74f55743ded588896;hp=3a3deab0c8f7b152ac56d08348d003b84286c247;hpb=97567dd81f508dd6295ac4d73d849aa2ce0a6549;p=github%2FChocobozzz%2FPeerTube.git

diff --git a/server/helpers/custom-validators/misc.ts b/server/helpers/custom-validators/misc.ts
index 3a3deab0c..3ef38fce1 100644
--- a/server/helpers/custom-validators/misc.ts
+++ b/server/helpers/custom-validators/misc.ts
@@ -1,10 +1,18 @@
 import 'multer'
 import * as validator from 'validator'
+import { sep } from 'path'
 
 function exists (value: any) {
   return value !== undefined && value !== null
 }
 
+function isSafePath (p: string) {
+  return exists(p) &&
+    (p + '').split(sep).every(part => {
+      return [ '..' ].includes(part) === false
+    })
+}
+
 function isArray (value: any) {
   return Array.isArray(value)
 }
@@ -97,6 +105,7 @@ export {
   isNotEmptyIntArray,
   isArray,
   isIdValid,
+  isSafePath,
   isUUIDValid,
   isIdOrUUIDValid,
   isDateValid,