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client: Send KEX as soon as banners are exchanged

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Signed-off-by: Meng Tan <mtan@wallix.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit b796924fea)
This commit is contained in:
Meng Tan
2018-10-24 10:43:17 +02:00
committed by Andreas Schneider
parent 2ff8a09ee6
commit 8ba10ef42b
1 changed files with 18 additions and 5 deletions
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23
src/client.c
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@@ -411,6 +411,14 @@ static void ssh_client_connection_callback(ssh_session session)
ssh_packet_set_default_callbacks(session);
session->session_state = SSH_SESSION_STATE_INITIAL_KEX;
rc = ssh_set_client_kex(session);
if (rc != SSH_OK) {
goto error;
}
rc = ssh_send_kex(session, 0);
if (rc < 0) {
goto error;
}
set_status(session, 0.5f);
break;
@@ -420,14 +428,19 @@ static void ssh_client_connection_callback(ssh_session session)
case SSH_SESSION_STATE_KEXINIT_RECEIVED:
set_status(session,0.6f);
ssh_list_kex(&session->next_crypto->server_kex);
if (ssh_set_client_kex(session) < 0) {
goto error;
if (session->next_crypto->client_kex.methods[0] == NULL) {
/* in rekeying state if next_crypto client_kex is empty */
rc = ssh_set_client_kex(session);
if (rc != SSH_OK) {
goto error;
}
rc = ssh_send_kex(session, 0);
if (rc < 0) {
goto error;
}
}
if (ssh_kex_select_methods(session) == SSH_ERROR)
goto error;
if (ssh_send_kex(session, 0) < 0) {
goto error;
}
set_status(session,0.8f);
session->session_state=SSH_SESSION_STATE_DH;
if (dh_handshake(session) == SSH_ERROR) {