tor

commit 0971b3ce4d03929ef09838209ab87de4f9dfcf1f
parent 9697c2da4680267038d407093cbcbc4c68059904
Author: David Goulet <dgoulet@torproject.org>
Date:   Fri, 14 Sep 2018 10:56:34 -0400

hs-v3: Don't BUG() on directory permission check failure

In hs_config.c, we do validate the permission of the hidden service directory
but we do not try to create it. So, in the event that the directory doesn't
exists, we end up in the loading key code path which checks for the
permission and possibly creates the directory. On failure, don't BUG() since
there is a perfectly valid use case for that function to fail.

Fixes #27335

Signed-off-by: David Goulet <dgoulet@torproject.org>

Diffstat:
A
changes/bug27335
 | 
4
++++
M
src/or/hs_service.c
 | 
6
+++---

2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/changes/bug27335 b/changes/bug27335
@@ -0,0 +1,4 @@
+  o Minor bugfixes (hidden service v3):
+    - In case the hidden service directory can't be created or has wrong
+      permissions, do not BUG() on it which lead to a non fatal stacktrace.
+      Fixes bug 27335; bugfix on 0.3.2.1.
diff --git a/src/or/hs_service.c b/src/or/hs_service.c
@@ -974,9 +974,9 @@ load_service_keys(hs_service_t *service)
    * files to that directory so make sure it exists and has the right
    * permissions. We do this here because at this stage we know that Tor is
    * actually running and the service we have has been validated. */
-  if (BUG(hs_check_service_private_dir(get_options()->User,
-                                       config->directory_path,
-                                       config->dir_group_readable, 1) < 0)) {
+  if (hs_check_service_private_dir(get_options()->User,
+                                   config->directory_path,
+                                   config->dir_group_readable, 1) < 0) {
     goto end;
   }