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s3:libsmb: remove pending requests as early as possible via a smbsock_any_connect_cleanup() hook

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Once we got an error or a valid connection we should destroy all other
connection attempts as early as possible.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11316

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This commit is contained in:
Stefan Metzmacher 2015-05-21 03:01:30 +02:00
parent 04f89d4255
commit 058d84747e
1 changed files with 31 additions and 2 deletions
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33
source3/libsmb/smbsock_connect.c
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@ -598,6 +598,8 @@ struct smbsock_any_connect_state {
size_t chosen_index;
};
static void smbsock_any_connect_cleanup(struct tevent_req *req,
enum tevent_req_state req_state);
static bool smbsock_any_connect_send_next(
struct tevent_req *req, struct smbsock_any_connect_state *state);
static void smbsock_any_connect_trynext(struct tevent_req *subreq);
@ -628,6 +630,9 @@ struct tevent_req *smbsock_any_connect_send(TALLOC_CTX *mem_ctx,
state->calling_names = calling_names;
state->calling_types = calling_types;
state->port = port;
state->fd = -1;
tevent_req_set_cleanup_fn(req, smbsock_any_connect_cleanup);
if (num_addrs == 0) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
@ -653,6 +658,27 @@ struct tevent_req *smbsock_any_connect_send(TALLOC_CTX *mem_ctx,
return req;
}
static void smbsock_any_connect_cleanup(struct tevent_req *req,
enum tevent_req_state req_state)
{
struct smbsock_any_connect_state *state = tevent_req_data(
req, struct smbsock_any_connect_state);
TALLOC_FREE(state->requests);
if (req_state == TEVENT_REQ_DONE) {
/*
* Keep the socket open for the caller.
*/
return;
}
if (state->fd != -1) {
close(state->fd);
state->fd = -1;
}
}
static void smbsock_any_connect_trynext(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
@ -742,9 +768,9 @@ static void smbsock_any_connect_connected(struct tevent_req *subreq)
if (NT_STATUS_IS_OK(status)) {
/*
* This will kill all the other requests
* tevent_req_done() will kill all the other requests
* via smbsock_any_connect_cleanup().
*/
TALLOC_FREE(state->requests);
state->fd = fd;
state->chosen_port = chosen_port;
state->chosen_index = chosen_index;
@ -776,15 +802,18 @@ NTSTATUS smbsock_any_connect_recv(struct tevent_req *req, int *pfd,
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
*pfd = state->fd;
state->fd = -1;
if (chosen_index != NULL) {
*chosen_index = state->chosen_index;
}
if (chosen_port != NULL) {
*chosen_port = state->chosen_port;
}
tevent_req_received(req);
return NT_STATUS_OK;
}