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-rw-r--r--source3/lib/async_sock.c214
1 files changed, 113 insertions, 101 deletions
diff --git a/source3/lib/async_sock.c b/source3/lib/async_sock.c
index f755f7ac58..bb89a1353a 100644
--- a/source3/lib/async_sock.c
+++ b/source3/lib/async_sock.c
@@ -535,63 +535,16 @@ NTSTATUS recvall_recv(struct async_req *req)
return async_req_simple_recv(req);
}
-/**
- * fde event handler for connect(2)
- * @param[in] ev The event context that sent us here
- * @param[in] fde The file descriptor event associated with the connect
- * @param[in] flags Indicate read/writeability of the socket
- * @param[in] priv private data, "struct async_req *" in this case
- */
-
-static void async_connect_callback(struct event_context *ev,
- struct fd_event *fde, uint16_t flags,
- void *priv)
-{
- struct async_req *req = talloc_get_type_abort(
- priv, struct async_req);
- struct async_syscall_state *state = talloc_get_type_abort(
- req->private_data, struct async_syscall_state);
- struct param_connect *p = &state->param.param_connect;
-
- if (state->syscall_type != ASYNC_SYSCALL_CONNECT) {
- async_req_error(req, NT_STATUS_INTERNAL_ERROR);
- return;
- }
-
- TALLOC_FREE(state->fde);
-
- /*
- * Stevens, Network Programming says that if there's a
- * successful connect, the socket is only writable. Upon an
- * error, it's both readable and writable.
- */
- if ((flags & (EVENT_FD_READ|EVENT_FD_WRITE))
- == (EVENT_FD_READ|EVENT_FD_WRITE)) {
- int sockerr;
- socklen_t err_len = sizeof(sockerr);
-
- if (getsockopt(p->fd, SOL_SOCKET, SO_ERROR,
- (void *)&sockerr, &err_len) == 0) {
- errno = sockerr;
- }
-
- state->sys_errno = errno;
-
- DEBUG(10, ("connect returned %s\n", strerror(errno)));
-
- sys_fcntl_long(p->fd, F_SETFL, p->old_sockflags);
-
- async_req_error(req, map_nt_error_from_unix(state->sys_errno));
- return;
- }
-
- sys_fcntl_long(p->fd, F_SETFL, p->old_sockflags);
-
- state->result.result_int = 0;
- state->sys_errno = 0;
+struct async_connect_state {
+ int fd;
+ int result;
+ int sys_errno;
+ long old_sockflags;
+};
- async_req_done(req);
-}
+static void async_connect_connected(struct event_context *ev,
+ struct fd_event *fde, uint16_t flags,
+ void *priv);
/**
* @brief async version of connect(2)
@@ -606,48 +559,46 @@ static void async_connect_callback(struct event_context *ev,
* connect in an async state. This will be reset when the request is finished.
*/
-struct async_req *async_connect(TALLOC_CTX *mem_ctx, struct event_context *ev,
- int fd, const struct sockaddr *address,
- socklen_t address_len)
+struct async_req *async_connect_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ int fd, const struct sockaddr *address,
+ socklen_t address_len)
{
struct async_req *result;
- struct async_syscall_state *state;
- struct param_connect *p;
+ struct async_connect_state *state;
+ struct fd_event *fde;
+ NTSTATUS status;
- result = async_syscall_new(mem_ctx, ev, ASYNC_SYSCALL_CONNECT, &state);
+ result = async_req_new(mem_ctx);
if (result == NULL) {
return NULL;
}
- p = &state->param.param_connect;
+ state = talloc(result, struct async_connect_state);
+ if (state == NULL) {
+ goto fail;
+ }
+ result->private_data = state;
/**
* We have to set the socket to nonblocking for async connect(2). Keep
* the old sockflags around.
*/
- p->old_sockflags = sys_fcntl_long(fd, F_GETFL, 0);
+ state->fd = fd;
+ state->sys_errno = 0;
- if (p->old_sockflags == -1) {
- if (async_post_status(result, ev,
- map_nt_error_from_unix(errno))) {
- return result;
- }
- TALLOC_FREE(result);
- return NULL;
+ state->old_sockflags = sys_fcntl_long(fd, F_GETFL, 0);
+ if (state->old_sockflags == -1) {
+ goto post_errno;
}
set_blocking(fd, false);
- state->result.result_int = connect(fd, address, address_len);
-
- if (state->result.result_int == 0) {
+ state->result = connect(fd, address, address_len);
+ if (state->result == 0) {
state->sys_errno = 0;
- if (async_post_status(result, ev, NT_STATUS_OK)) {
- return result;
- }
- sys_fcntl_long(fd, F_SETFL, p->old_sockflags);
- TALLOC_FREE(result);
- return NULL;
+ status = NT_STATUS_OK;
+ goto post_status;
}
/**
@@ -662,32 +613,93 @@ struct async_req *async_connect(TALLOC_CTX *mem_ctx, struct event_context *ev,
errno == EISCONN ||
#endif
errno == EAGAIN || errno == EINTR)) {
+ goto post_errno;
+ }
- state->sys_errno = errno;
-
- if (async_post_status(result, ev,
- map_nt_error_from_unix(errno))) {
- return result;
- }
- sys_fcntl_long(fd, F_SETFL, p->old_sockflags);
- TALLOC_FREE(result);
- return NULL;
+ fde = event_add_fd(ev, state, fd, EVENT_FD_READ | EVENT_FD_WRITE,
+ async_connect_connected, result);
+ if (fde == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto post_status;
}
+ return result;
- state->fde = event_add_fd(ev, state, fd,
- EVENT_FD_READ | EVENT_FD_WRITE,
- async_connect_callback, result);
- if (state->fde == NULL) {
- sys_fcntl_long(fd, F_SETFL, p->old_sockflags);
- TALLOC_FREE(result);
- return NULL;
+ post_errno:
+ state->sys_errno = errno;
+ status = map_nt_error_from_unix(state->sys_errno);
+ post_status:
+ sys_fcntl_long(fd, F_SETFL, state->old_sockflags);
+ if (!async_post_status(result, ev, status)) {
+ goto fail;
}
- result->private_data = state;
+ return result;
+ fail:
+ TALLOC_FREE(result);
+ return NULL;
+}
- state->param.param_connect.fd = fd;
- state->param.param_connect.address = address;
- state->param.param_connect.address_len = address_len;
+/**
+ * fde event handler for connect(2)
+ * @param[in] ev The event context that sent us here
+ * @param[in] fde The file descriptor event associated with the connect
+ * @param[in] flags Indicate read/writeability of the socket
+ * @param[in] priv private data, "struct async_req *" in this case
+ */
- return result;
+static void async_connect_connected(struct event_context *ev,
+ struct fd_event *fde, uint16_t flags,
+ void *priv)
+{
+ struct async_req *req = talloc_get_type_abort(
+ priv, struct async_req);
+ struct async_connect_state *state = talloc_get_type_abort(
+ req->private_data, struct async_connect_state);
+
+ TALLOC_FREE(fde);
+
+ /*
+ * Stevens, Network Programming says that if there's a
+ * successful connect, the socket is only writable. Upon an
+ * error, it's both readable and writable.
+ */
+ if ((flags & (EVENT_FD_READ|EVENT_FD_WRITE))
+ == (EVENT_FD_READ|EVENT_FD_WRITE)) {
+ int sockerr;
+ socklen_t err_len = sizeof(sockerr);
+
+ if (getsockopt(state->fd, SOL_SOCKET, SO_ERROR,
+ (void *)&sockerr, &err_len) == 0) {
+ errno = sockerr;
+ }
+
+ state->sys_errno = errno;
+
+ DEBUG(10, ("connect returned %s\n", strerror(errno)));
+
+ sys_fcntl_long(state->fd, F_SETFL, state->old_sockflags);
+ async_req_error(req, map_nt_error_from_unix(state->sys_errno));
+ return;
+ }
+
+ state->sys_errno = 0;
+ async_req_done(req);
}
+NTSTATUS async_connect_recv(struct async_req *req, int *perrno)
+{
+ struct async_connect_state *state = talloc_get_type_abort(
+ req->private_data, struct async_connect_state);
+ NTSTATUS status;
+
+ sys_fcntl_long(state->fd, F_SETFL, state->old_sockflags);
+
+ *perrno = state->sys_errno;
+
+ if (async_req_is_error(req, &status)) {
+ return status;
+ }
+ if (state->sys_errno == 0) {
+ return NT_STATUS_OK;
+ }
+ return map_nt_error_from_unix(state->sys_errno);
+}
generated by cgit (git 2.34.1) at 2024-11-16 21:12:37 +0000