Am 06.12.21 um 15:56 schrieb Arne Schwabe:
This allows to use the same configuration multiple platforms/ssl libraries
and include optional algorithms that are not available on all platforms
For example "AES-256-GCM:AES-128-GCM:?CHACHA20-POLY1305" can be used to
emulate the default behaviour of OpenVPN 2.6.
Patch v2: fix error_found reset by optional cipher, fix typo in Changes.rst
Patch v3: remove part of other patch accidently included
Signed-off-by: Arne Schwabe <a...@rfc2549.org>
---
src/openvpn/ssl_ncp.c | 4 ++--
tests/unit_tests/openvpn/test_ncp.c | 3 +++
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/openvpn/ssl_ncp.c b/src/openvpn/ssl_ncp.c
index 7ad825038..7f5e6fe8b 100644
--- a/src/openvpn/ssl_ncp.c
+++ b/src/openvpn/ssl_ncp.c
@@ -134,7 +134,7 @@ mutate_ncp_cipher_list(const char *list, struct gc_arena
*gc)
{
const char* optstr = optional ? "optional ": "";
msg(M_WARN, "Unsupported %scipher in --data-ciphers: %s", optstr,
token);
- error_found = !optional;
+ error_found = error_found || !optional;
}
else
{
@@ -489,4 +489,4 @@ p2p_mode_ncp(struct tls_multi *multi, struct tls_session
*session)
multi->use_peer_id, multi->peer_id, common_cipher);
gc_free(&gc);
-}
\ No newline at end of file
+}
diff --git a/tests/unit_tests/openvpn/test_ncp.c
b/tests/unit_tests/openvpn/test_ncp.c
index faf09a36c..6702133ad 100644
--- a/tests/unit_tests/openvpn/test_ncp.c
+++ b/tests/unit_tests/openvpn/test_ncp.c
@@ -95,6 +95,9 @@ test_check_ncp_ciphers_list(void **state)
/* All unsupported should still yield an empty list */
assert_ptr_equal(mutate_ncp_cipher_list("?kugelfisch:?grasshopper", &gc),
NULL);
+ /* If the last is optional, previous invalid ciphers should be ignored */
+
assert_ptr_equal(mutate_ncp_cipher_list("Vollbit:Littlebit:AES-256-CBC:BF-CBC:?nixbit",
&gc), NULL);
+
/* For testing that with OpenSSL 1.1.0+ that also accepts ciphers in
* a different spelling the normalised cipher output is the same */
bool have_chacha_mixed_case = cipher_kt_get("ChaCha20-Poly1305");
Disregard this. I did not realise the original version of the patch had
been already pushed to master. I will amend the commmit to make this is
a follow up patch.
Arne
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