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MINOR: ssl: add statement 'no-tls-tickets' on bind to disable stateless session resumption

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Disables the stateless session resumption (RFC 5077 TLS Ticket extension)
and force to use stateful session resumption.
Stateless session resumption is more expensive in CPU usage.
This commit is contained in:
Emeric Brun 2012-10-02 13:45:20 +02:00 committed by Willy Tarreau
parent c6678e21bb
commit 2d0c482682
2 changed files with 29 additions and 14 deletions
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1
include/types/listener.h
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@ -102,6 +102,7 @@ struct bind_conf {
char *ciphers; /* cipher suite to use if non-null */
char *crlfile; /* CRLfile to use on verify */
char *ecdhe; /* named curve to use for ECDHE */
int no_tls_tickets; /* disable session resumption tickets */
int nosslv3; /* disable SSLv3 */
int notlsv10; /* disable TLSv1.0 */
int notlsv11; /* disable TLSv1.1 */

14
src/ssl_sock.c
View File

@ -447,6 +447,9 @@ int ssl_sock_load_cert(char *path, struct bind_conf *bind_conf, struct proxy *cu
#ifndef SSL_OP_SINGLE_ECDH_USE /* needs OpenSSL >= 0.9.8 */
#define SSL_OP_SINGLE_ECDH_USE 0
#endif
#ifndef SSL_OP_NO_TICKET /* needs OpenSSL >= 0.9.8 */
#define SSL_OP_NO_TICKET 0
#endif
#ifndef SSL_OP_NO_COMPRESSION /* needs OpenSSL >= 0.9.9 */
#define SSL_OP_NO_COMPRESSION 0
#endif
@ -488,6 +491,8 @@ int ssl_sock_prepare_ctx(struct bind_conf *bind_conf, SSL_CTX *ctx, struct proxy
ssloptions |= SSL_OP_NO_TLSv1_1;
if (bind_conf->notlsv12)
ssloptions |= SSL_OP_NO_TLSv1_2;
if (bind_conf->no_tls_tickets)
ssloptions |= SSL_OP_NO_TICKET;
if (bind_conf->prefer_server_ciphers)
ssloptions |= SSL_OP_CIPHER_SERVER_PREFERENCE;
@ -1192,6 +1197,14 @@ static int bind_parse_ignore_err(char **args, int cur_arg, struct proxy *px, str
return 0;
}
/* parse the "no-tls-tickets" bind keyword */
static int bind_parse_no_tls_tickets(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->no_tls_tickets = 1;
return 0;
}
/* parse the "nosslv3" bind keyword */
static int bind_parse_nosslv3(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
@ -1311,6 +1324,7 @@ static struct bind_kw_list bind_kws = { "SSL", { }, {
{ "crt", bind_parse_crt, 1 }, /* load SSL certificates from this location */
{ "crt-ignore-err", bind_parse_ignore_err, 1 }, /* set error IDs to ingore on verify depth == 0 */
{ "ecdhe", bind_parse_ecdhe, 1 }, /* defines named curve for elliptic curve Diffie-Hellman */
{ "no-tls-tickets", bind_parse_no_tls_tickets, 0 }, /* disable session resumption tickets */
{ "nosslv3", bind_parse_nosslv3, 0 }, /* disable SSLv3 */
{ "notlsv10", bind_parse_notlsv10, 0 }, /* disable TLSv10 */
{ "notlsv11", bind_parse_notlsv11, 0 }, /* disable TLSv11 */