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MINOR: quic: Enable early data at SSL session level (aws-lc) 

This patch impacts only the haproxy build against aws-lc TLS stack (USE_OPENSSL_AWSLC).

Implement qc_set_quic_early_data_enabled() new function to enable
early data at session level. To make QUIC O-RTT work, a context string
must be set calling SSL_set_quic_early_data_context(). This is a
subset of the encoded transport parameters which is used for this.
Note that some application level settings should be also added (TODO).

This patch is required to make 0-RTT work for haproxy builds against aws-lc.
This commit is contained in:
Frederic Lecaille 2024-01-23 11:41:44 +01:00
parent 1cddd2637b
commit f783dd959b
1 changed files with 37 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/quic_ssl.c
View File

@ -713,6 +713,40 @@ static int qc_ssl_sess_init(struct quic_conn *qc, SSL_CTX *ssl_ctx, SSL **ssl)
return ret;
}
/* Enable early data for <ssl> QUIC TLS session.
* Return 1 if succeeded, 0 if not.
*/
static int qc_set_quic_early_data_enabled(struct quic_conn *qc, SSL *ssl)
{
#if defined(OPENSSL_IS_AWSLC)
struct quic_transport_params p = {0};
unsigned char buf[128];
size_t len;
/* Apply default values to <p> transport parameters. */
quic_transport_params_init(&p, 1);
/* The stateless_reset_token transport parameter is not needed. */
p.with_stateless_reset_token = 0;
len = quic_transport_params_encode(buf, buf + sizeof buf, &p, NULL, 1);
if (!len) {
TRACE_ERROR("quic_transport_params_encode() failed", QUIC_EV_CONN_RWSEC, qc);
return 0;
}
/* XXX TODO: Should also add the application settings. XXX */
if (!SSL_set_quic_early_data_context(ssl, buf, len)) {
TRACE_ERROR("SSL_set_quic_early_data_context() failed", QUIC_EV_CONN_RWSEC, qc);
return 0;
}
SSL_set_early_data_enabled(ssl, 1);
#else
SSL_set_quic_early_data_enabled(ssl, 1);
#endif
return 1;
}
/* Allocate the ssl_sock_ctx from connection <qc>. This creates the tasklet
* used to process <qc> received packets. The allocated context is stored in
* <qc.xprt_ctx>.
@ -748,11 +782,11 @@ int qc_alloc_ssl_sock_ctx(struct quic_conn *qc)
if (qc_is_listener(qc)) {
if (qc_ssl_sess_init(qc, bc->initial_ctx, &ctx->ssl) == -1)
goto err;
#if (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L) && !defined(OPENSSL_IS_AWSLC)
#if (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
#ifndef USE_QUIC_OPENSSL_COMPAT
/* Enabling 0-RTT */
if (bc->ssl_conf.early_data)
SSL_set_quic_early_data_enabled(ctx->ssl, 1);
if (bc->ssl_conf.early_data && !qc_set_quic_early_data_enabled(qc, ctx->ssl))
goto err;
#endif
#endif