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authorRich Salz <rsalz@akamai.com>2021-05-06 12:56:35 -0400
committerTomas Mraz <tomas@openssl.org>2021-05-17 10:53:30 +0200
commit55373bfd419ca010a15aac18c88c94827e2f3a92 (patch)
tree803860f6eae08da5688ae7c4b68e195e52851a23 /ssl/statem
parentd7970dd963134534340ad00fa62cb1180daf5cb0 (diff)
Add SSL_OP_ALLOW_CLIENT_RENEGOTIATION
Add -client_renegotiation flag support. The -client_renegotiation flag is equivalent to SSL_OP_ALLOW_CLIENT_RENEGOTIATION. Add support to the app, the config code, and the documentation. Add SSL_OP_ALLOW_CLIENT_RENEGOTIATION to the SSL tests. We don't need to always enable it, but there are so many tests so this is the easiest thing to do. Add a test where client tries to renegotiate and it fails as expected. Add a test where server tries to renegotiate and it succeeds. The second test is supported by a new flag, -immediate_renegotiation, which is ignored on the client. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15184)
Diffstat (limited to 'ssl/statem')
-rw-r--r--ssl/statem/statem_srvr.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c
index 768e1110e6..386bd983fc 100644
--- a/ssl/statem/statem_srvr.c
+++ b/ssl/statem/statem_srvr.c
@@ -1368,6 +1368,10 @@ static void ssl_check_for_safari(SSL *s, const CLIENTHELLO_MSG *hello)
ext_len);
}
+#define RENEG_OPTIONS_OK(options) \
+ ((options & SSL_OP_NO_RENEGOTIATION) == 0 \
+ && (options & SSL_OP_ALLOW_CLIENT_RENEGOTIATION) != 0)
+
MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt)
{
/* |cookie| will only be initialized for DTLS. */
@@ -1381,7 +1385,7 @@ MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt)
SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
goto err;
}
- if ((s->options & SSL_OP_NO_RENEGOTIATION) != 0
+ if (!RENEG_OPTIONS_OK(s->options)
|| (!s->s3.send_connection_binding
&& (s->options
& SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION) == 0)) {