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BUG/MEDIUM: ssl: fix build with AWS-LC

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AWS-LC doesn't provide SSL_in_before(), and doesn't provide an easy way
to know if we already started the handshake or not. So instead, just add
a new field in ssl_sock_ctx, "can_write_early_data", that will be
initialized to 1, and will be set to 0 as soon as we start the
handshake.

This should be backported up to 2.8 with
13aa5616c9f99dbca0711fd18f716bd6f48eb2ae.
This commit is contained in:
Olivier Houchard 2025-08-08 20:17:55 +02:00 committed by Olivier Houchard
parent 13aa5616c9
commit b6702d5342
2 changed files with 6 additions and 3 deletions
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1
include/haproxy/ssl_sock-t.h
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@ -258,6 +258,7 @@ struct ssl_sock_ctx {
unsigned long error_code; /* last error code of the error stack */
struct buffer early_buf; /* buffer to store the early data received */
int sent_early_data; /* Amount of early data we sent so far */
int can_send_early_data; /* We did not start the handshake yet so we can send early data */
#ifdef USE_QUIC
struct quic_conn *qc;

8
src/ssl_sock.c
View File

@ -5104,6 +5104,7 @@ static int ssl_sock_init(struct connection *conn, void **xprt_ctx)
ctx->xprt_st = 0;
ctx->xprt_ctx = NULL;
ctx->error_code = 0;
ctx->can_send_early_data = 1;
next_sslconn = increment_sslconn();
if (!next_sslconn) {
@ -5458,6 +5459,7 @@ static int ssl_sock_handshake(struct connection *conn, unsigned int flag)
/* read some data: consider handshake completed */
goto reneg_ok;
}
ctx->can_send_early_data = 0;
ret = SSL_do_handshake(ctx->ssl);
check_error:
if (ret != 1) {
@ -5929,10 +5931,10 @@ static size_t ssl_sock_to_buf(struct connection *conn, void *xprt_ctx, struct bu
#endif
/*
* We have to check SSL_in_before() here, as the handshake flags
* We have to check can_send_early_data here, as the handshake flags
* may have been removed in case we want to try to send early data.
*/
if (SSL_in_before(ctx->ssl) ||
if (ctx->can_send_early_data ||
(conn->flags & (CO_FL_WAIT_XPRT | CO_FL_SSL_WAIT_HS))) {
/* a handshake was requested */
TRACE_LEAVE(SSL_EV_CONN_RECV, conn);
@ -6106,7 +6108,7 @@ static size_t ssl_sock_from_buf(struct connection *conn, void *xprt_ctx, const s
ctx->xprt_st &= ~SSL_SOCK_SEND_MORE;
#ifdef SSL_READ_EARLY_DATA_SUCCESS
if (SSL_in_before(ctx->ssl) && conn_is_back(conn)) {
if (ctx->can_send_early_data && conn_is_back(conn)) {
unsigned int max_early;
if (objt_listener(conn->target))