Add wb_trans_send/revc
authorVolker Lendecke <vl@sernet.de>
Mon, 1 Dec 2008 07:25:25 +0000 (08:25 +0100)
committerVolker Lendecke <vl@samba.org>
Mon, 8 Dec 2008 21:09:34 +0000 (22:09 +0100)
source3/winbindd/winbindd_proto.h
source3/winbindd/winbindd_reqtrans.c

index 3869ac5..92ce1f9 100644 (file)
@@ -88,6 +88,15 @@ struct async_req *wb_resp_write_send(TALLOC_CTX *mem_ctx,
                                     struct winbindd_response *wb_resp);
 NTSTATUS wb_resp_write_recv(struct async_req *req);
 
+struct async_req *wb_trans_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               int fd,
+                               struct winbindd_request *wb_req,
+                               struct timeval timeout,
+                               size_t reply_max_extra_data);
+NTSTATUS wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+                      struct winbindd_response **presp);
+
 /* The following definitions come from winbindd/winbindd_ads.c  */
 
 
index e9901e1..ea16c5f 100644 (file)
@@ -103,8 +103,7 @@ static void wb_req_read_len(struct async_req *subreq)
        subreq = recvall_send(
                req, state->ev, state->fd, (uint32 *)(state->wb_req)+1,
                sizeof(struct winbindd_request) - sizeof(uint32), 0);
-       if (subreq == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -143,17 +142,16 @@ static void wb_req_read_main(struct async_req *subreq)
 
        state->wb_req->extra_data.data = TALLOC_ARRAY(
                state->wb_req, char, state->wb_req->extra_len + 1);
-       if (state->wb_req->extra_data.data == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(state->wb_req->extra_data.data, req)) {
                return;
        }
+
        state->wb_req->extra_data.data[state->wb_req->extra_len] = 0;
 
        subreq = recvall_send(
                req, state->ev, state->fd, state->wb_req->extra_data.data,
                state->wb_req->extra_len, 0);
-       if (subreq == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -182,12 +180,11 @@ NTSTATUS wb_req_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
 {
        struct req_read_state *state = talloc_get_type_abort(
                req->private_data, struct req_read_state);
+       NTSTATUS status;
 
-       SMB_ASSERT(req->state >= ASYNC_REQ_DONE);
-       if (req->state == ASYNC_REQ_ERROR) {
-               return req->status;
+       if (async_req_is_error(req, &status)) {
+               return status;
        }
-
        *preq = talloc_move(mem_ctx, &state->wb_req);
        return NT_STATUS_OK;
 }
@@ -261,8 +258,7 @@ static void wb_req_write_main(struct async_req *subreq)
        subreq = sendall_send(state, state->ev, state->fd,
                              state->wb_req->extra_data.data,
                              state->wb_req->extra_len, 0);
-       if (subreq == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -288,12 +284,7 @@ static void wb_req_write_extra(struct async_req *subreq)
 
 NTSTATUS wb_req_write_recv(struct async_req *req)
 {
-       SMB_ASSERT(req->state >= ASYNC_REQ_DONE);
-       if (req->state == ASYNC_REQ_ERROR) {
-               return req->status;
-       }
-
-       return NT_STATUS_OK;
+       return async_req_simple_recv(req);
 }
 
 struct resp_read_state {
@@ -373,8 +364,7 @@ static void wb_resp_read_len(struct async_req *subreq)
        subreq = recvall_send(
                req, state->ev, state->fd, (uint32 *)(state->wb_resp)+1,
                sizeof(struct winbindd_response) - sizeof(uint32), 0);
-       if (subreq == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -406,8 +396,7 @@ static void wb_resp_read_main(struct async_req *subreq)
 
        state->wb_resp->extra_data.data = TALLOC_ARRAY(
                state->wb_resp, char, extra_len+1);
-       if (state->wb_resp->extra_data.data == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(state->wb_resp->extra_data.data, req)) {
                return;
        }
        ((char *)state->wb_resp->extra_data.data)[extra_len] = 0;
@@ -415,8 +404,7 @@ static void wb_resp_read_main(struct async_req *subreq)
        subreq = recvall_send(
                req, state->ev, state->fd, state->wb_resp->extra_data.data,
                extra_len, 0);
-       if (subreq == NULL) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -445,12 +433,11 @@ NTSTATUS wb_resp_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
 {
        struct resp_read_state *state = talloc_get_type_abort(
                req->private_data, struct resp_read_state);
+       NTSTATUS status;
 
-       SMB_ASSERT(req->state >= ASYNC_REQ_DONE);
-       if (req->state == ASYNC_REQ_ERROR) {
-               return req->status;
+       if (async_req_is_error(req, &status)) {
+               return status;
        }
-
        *presp = talloc_move(mem_ctx, &state->wb_resp);
        return NT_STATUS_OK;
 }
@@ -525,8 +512,7 @@ static void wb_resp_write_main(struct async_req *subreq)
                state, state->ev, state->fd,
                state->wb_resp->extra_data.data,
                state->wb_resp->length - sizeof(struct winbindd_response), 0);
-       if (subreq == 0) {
-               async_req_error(req, NT_STATUS_NO_MEMORY);
+       if (async_req_nomem(subreq, req)) {
                return;
        }
 
@@ -552,10 +538,148 @@ static void wb_resp_write_extra(struct async_req *subreq)
 
 NTSTATUS wb_resp_write_recv(struct async_req *req)
 {
-       SMB_ASSERT(req->state >= ASYNC_REQ_DONE);
-       if (req->state == ASYNC_REQ_ERROR) {
-               return req->status;
+       return async_req_simple_recv(req);
+}
+
+struct wb_trans_state {
+       struct event_context *ev;
+       struct timed_event *te;
+       int fd;
+       struct winbindd_response *wb_resp;
+       size_t reply_max_extra_data;
+};
+
+static void wb_trans_timeout(struct event_context *ev, struct timed_event *te,
+                            const struct timeval *now, void *priv);
+static void wb_trans_sent(struct async_req *req);
+static void wb_trans_received(struct async_req *req);
+
+struct async_req *wb_trans_send(TALLOC_CTX *mem_ctx,
+                               struct event_context *ev,
+                               int fd,
+                               struct winbindd_request *wb_req,
+                               struct timeval timeout,
+                               size_t reply_max_extra_data)
+{
+       struct async_req *result, *subreq;
+       struct wb_trans_state *state;
+
+       result = async_req_new(mem_ctx, ev);
+       if (result == NULL) {
+               return NULL;
+       }
+
+       state = talloc(result, struct wb_trans_state);
+       if (state == NULL) {
+               goto nomem;
+       }
+       result->private_data = state;
+
+       state->ev = ev;
+       state->fd = fd;
+       state->reply_max_extra_data = reply_max_extra_data;
+
+       state->te = event_add_timed(
+               ev, state,
+               timeval_current_ofs(timeout.tv_sec, timeout.tv_usec),
+               "wb_trans_timeout", wb_trans_timeout, result);
+       if (state->te == NULL) {
+               goto nomem;
+       }
+
+       subreq = wb_req_write_send(state, state->ev, state->fd, wb_req);
+       if (subreq == NULL) {
+               goto nomem;
+       }
+       subreq->async.fn = wb_trans_sent;
+       subreq->async.priv = result;
+
+       return result;
+
+ nomem:
+       TALLOC_FREE(result);
+       return NULL;
+}
+
+static void wb_trans_timeout(struct event_context *ev, struct timed_event *te,
+                            const struct timeval *now, void *priv)
+{
+       struct async_req *req = talloc_get_type_abort(
+               priv, struct async_req);
+       struct wb_trans_state *state = talloc_get_type_abort(
+               req->private_data, struct wb_trans_state);
+
+       TALLOC_FREE(state->te);
+       async_req_error(req, NT_STATUS_IO_TIMEOUT);
+}
+
+static void wb_trans_sent(struct async_req *subreq)
+{
+       struct async_req *req = talloc_get_type_abort(
+               subreq->async.priv, struct async_req);
+       struct wb_trans_state *state = talloc_get_type_abort(
+               req->private_data, struct wb_trans_state);
+       NTSTATUS status;
+
+       status = wb_req_write_recv(subreq);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               async_req_error(req, status);
+               return;
+       }
+
+       subreq = wb_resp_read_send(state, state->ev, state->fd);
+       if (async_req_nomem(subreq, req)) {
+               return;
+       }
+
+       subreq->async.fn = wb_trans_received;
+       subreq->async.priv = req;
+};
+
+static void wb_trans_received(struct async_req *subreq)
+{
+       struct async_req *req = talloc_get_type_abort(
+               subreq->async.priv, struct async_req);
+       struct wb_trans_state *state = talloc_get_type_abort(
+               req->private_data, struct wb_trans_state);
+       NTSTATUS status;
+
+       TALLOC_FREE(state->te);
+
+       status = wb_resp_read_recv(subreq, state, &state->wb_resp);
+       TALLOC_FREE(subreq);
+       if (!NT_STATUS_IS_OK(status)) {
+               async_req_error(req, status);
+               return;
        }
 
+       async_req_done(req);
+}
+
+NTSTATUS wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+                      struct winbindd_response **presp)
+{
+       struct wb_trans_state *state = talloc_get_type_abort(
+               req->private_data, struct wb_trans_state);
+       NTSTATUS status;
+
+       if (async_req_is_error(req, &status)) {
+               return status;
+       }
+       *presp = talloc_move(mem_ctx, &state->wb_resp);
        return NT_STATUS_OK;
 }
+
+struct wb_trans_queue_state {
+       struct wb_trans_queue_state *prev, *next;
+       struct wb_trans_queue *queue;
+       struct winbindd_request *req;
+};
+
+struct wb_trans_queue {
+       int fd;
+       struct timeval timeout;
+       size_t max_resp_extra_data;
+       struct wb_trans_queue_state *queued_requests;
+};