[Pkg-gnupg-commit] [gnupg2] 08/112: agent: Fix passphrase cache lookups.
Daniel Kahn Gillmor
dkg at fifthhorseman.net
Tue Aug 30 17:48:13 UTC 2016
This is an automated email from the git hooks/post-receive script.
dkg pushed a commit to branch master
in repository gnupg2.
commit f474249366e8e143c8e6eb7f7b1a74056e46fa1f
Author: Justus Winter <justus at g10code.com>
Date: Mon Jul 18 12:51:38 2016 +0200
agent: Fix passphrase cache lookups.
CACHE_MODE_ANY is supposed to match any cache mode except
CACHE_MODE_IGNORE, but the code used '==' to compare cache modes.
* agent/cache.c (cache_mode_equal): New function.
(agent_set_cache): Use the new function to compare cache modes.
(agent_get_cache): Likewise.
* tests/openpgp/Makefile.am (TESTS): Add new test.
* tests/openpgp/issue2015.scm: New file.
GnuPG-bug-id: 2015
Signed-off-by: Justus Winter <justus at g10code.com>
---
agent/cache.c | 13 +++++++++++--
tests/openpgp/Makefile.am | 1 +
tests/openpgp/issue2015.scm | 29 +++++++++++++++++++++++++++++
3 files changed, 41 insertions(+), 2 deletions(-)
diff --git a/agent/cache.c b/agent/cache.c
index 3fffd2d..83107a6 100644
--- a/agent/cache.c
+++ b/agent/cache.c
@@ -299,6 +299,15 @@ agent_flush_cache (void)
}
+/* Compare two cache modes. */
+static int
+cache_mode_equal (cache_mode_t a, cache_mode_t b)
+{
+ /* CACHE_MODE_ANY matches any mode other than CACHE_MODE_IGNORE. */
+ return ((a == CACHE_MODE_ANY && b != CACHE_MODE_IGNORE)
+ || (b == CACHE_MODE_ANY && a != CACHE_MODE_IGNORE) || a == b);
+}
+
/* Store the string DATA in the cache under KEY and mark it with a
maximum lifetime of TTL seconds. If there is already data under
@@ -333,7 +342,7 @@ agent_put_cache (const char *key, cache_mode_t cache_mode,
{
if (((cache_mode != CACHE_MODE_USER
&& cache_mode != CACHE_MODE_NONCE)
- || r->cache_mode == cache_mode)
+ || cache_mode_equal (r->cache_mode, cache_mode))
&& !strcmp (r->key, key))
break;
}
@@ -416,7 +425,7 @@ agent_get_cache (const char *key, cache_mode_t cache_mode)
if (r->pw
&& ((cache_mode != CACHE_MODE_USER
&& cache_mode != CACHE_MODE_NONCE)
- || r->cache_mode == cache_mode)
+ || cache_mode_equal (r->cache_mode, cache_mode))
&& !strcmp (r->key, key))
{
/* Note: To avoid races KEY may not be accessed anymore below. */
diff --git a/tests/openpgp/Makefile.am b/tests/openpgp/Makefile.am
index 012a3f2..e8f46da 100644
--- a/tests/openpgp/Makefile.am
+++ b/tests/openpgp/Makefile.am
@@ -81,6 +81,7 @@ TESTS = setup.scm \
use-exact-key.scm \
default-key.scm \
export.scm \
+ issue2015.scm \
finish.scm
diff --git a/tests/openpgp/issue2015.scm b/tests/openpgp/issue2015.scm
new file mode 100755
index 0000000..536cb8f
--- /dev/null
+++ b/tests/openpgp/issue2015.scm
@@ -0,0 +1,29 @@
+#!/usr/bin/env gpgscm
+
+;; Copyright (C) 2016 g10 Code GmbH
+;;
+;; This file is part of GnuPG.
+;;
+;; GnuPG 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.
+;;
+;; GnuPG 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/>.
+
+(load (with-path "defs.scm"))
+
+(info "Checking passphrase cache (issue2015)...")
+(call-check `(,(tool 'gpg-preset-passphrase)
+ --preset --passphrase some_passphrase some_id))
+
+(let ((response (call-popen `(,(tool 'gpg-connect-agent))
+ "GET_PASSPHRASE --no-ask some_id X X X")))
+ (unless (string=? response "OK 736F6D655F70617373706872617365\n")
+ (error "Could not retrieve passphrase from cache:" response)))
--
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