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kex: Reformat ssh_send_kex

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Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Jakub Jelen
2023-03-14 09:49:24 +01:00
parent 653e5ee117
commit ad2797613e
1 changed files with 50 additions and 45 deletions
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95
src/kex.c
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@@ -861,61 +861,66 @@ int ssh_kex_select_methods (ssh_session session)
/* this function only sends the predefined set of kex methods */
int ssh_send_kex(ssh_session session, int server_kex)
{
struct ssh_kex_struct *kex = (server_kex ? &session->next_crypto->server_kex :
&session->next_crypto->client_kex);
ssh_string str = NULL;
int i;
int rc;
struct ssh_kex_struct *kex = (server_kex ?
&session->next_crypto->server_kex :
&session->next_crypto->client_kex);
ssh_string str = NULL;
int i;
int rc;
rc = ssh_buffer_pack(session->out_buffer,
"bP",
SSH2_MSG_KEXINIT,
16,
kex->cookie); /* cookie */
if (rc != SSH_OK)
goto error;
if (ssh_hashbufout_add_cookie(session) < 0) {
goto error;
}
ssh_list_kex(kex);
for (i = 0; i < SSH_KEX_METHODS; i++) {
str = ssh_string_from_char(kex->methods[i]);
if (str == NULL) {
goto error;
rc = ssh_buffer_pack(session->out_buffer,
"bP",
SSH2_MSG_KEXINIT,
16,
kex->cookie); /* cookie */
if (rc != SSH_OK)
goto error;
if (ssh_hashbufout_add_cookie(session) < 0) {
goto error;
}
if (ssh_buffer_add_ssh_string(session->out_hashbuf, str) < 0) {
goto error;
ssh_list_kex(kex);
for (i = 0; i < SSH_KEX_METHODS; i++) {
str = ssh_string_from_char(kex->methods[i]);
if (str == NULL) {
goto error;
}
rc = ssh_buffer_add_ssh_string(session->out_hashbuf, str);
if (rc < 0) {
goto error;
}
rc = ssh_buffer_add_ssh_string(session->out_buffer, str);
if (rc < 0) {
goto error;
}
SSH_STRING_FREE(str);
str = NULL;
}
if (ssh_buffer_add_ssh_string(session->out_buffer, str) < 0) {
goto error;
rc = ssh_buffer_pack(session->out_buffer,
"bd",
0,
0);
if (rc != SSH_OK) {
goto error;
}
SSH_STRING_FREE(str);
str = NULL;
}
rc = ssh_buffer_pack(session->out_buffer,
"bd",
0,
0);
if (rc != SSH_OK) {
goto error;
}
rc = ssh_packet_send(session);
if (rc == SSH_ERROR) {
return -1;
}
if (ssh_packet_send(session) == SSH_ERROR) {
return -1;
}
SSH_LOG(SSH_LOG_PACKET, "SSH_MSG_KEXINIT sent");
return 0;
SSH_LOG(SSH_LOG_PACKET, "SSH_MSG_KEXINIT sent");
return 0;
error:
ssh_buffer_reinit(session->out_buffer);
ssh_buffer_reinit(session->out_hashbuf);
SSH_STRING_FREE(str);
ssh_buffer_reinit(session->out_buffer);
ssh_buffer_reinit(session->out_hashbuf);
SSH_STRING_FREE(str);
return -1;
return -1;
}
/*