From a140823cc9d7a47e2fc2ffdb80d63b402f7664c0 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Wed, 18 Feb 2009 09:19:09 +0100
Subject: lib/tsocket: add tsocket_connect_send/recv()

metze
---
 lib/tsocket/config.mk         |   3 +-
 lib/tsocket/tsocket.h         |   5 ++
 lib/tsocket/tsocket_connect.c | 122 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 129 insertions(+), 1 deletion(-)
 create mode 100644 lib/tsocket/tsocket_connect.c

(limited to 'lib')

diff --git a/lib/tsocket/config.mk b/lib/tsocket/config.mk
index cd4225a1d3..b3890408f9 100644
--- a/lib/tsocket/config.mk
+++ b/lib/tsocket/config.mk
@@ -6,7 +6,8 @@ LIBTSOCKET_OBJ_FILES = $(addprefix ../lib/tsocket/, \
 					tsocket_helpers.o \
 					tsocket_bsd.o \
 					tsocket_recvfrom.o \
-					tsocket_sendto.o)
+					tsocket_sendto.o \
+					tsocket_connect.o)
 
 PUBLIC_HEADERS += $(addprefix ../lib/tsocket/, \
 				 tsocket.h\
diff --git a/lib/tsocket/tsocket.h b/lib/tsocket/tsocket.h
index 4445aafe9d..f7a7d6b614 100644
--- a/lib/tsocket/tsocket.h
+++ b/lib/tsocket/tsocket.h
@@ -187,5 +187,10 @@ struct tevent_req *tsocket_sendto_queue_send(TALLOC_CTX *mem_ctx,
 					     struct tsocket_address *dst);
 ssize_t tsocket_sendto_queue_recv(struct tevent_req *req, int *perrno);
 
+struct tevent_req *tsocket_connect_send(struct tsocket_context *sock,
+					TALLOC_CTX *mem_ctx,
+					const struct tsocket_address *dst);
+int tsocket_connect_recv(struct tevent_req *req, int *perrno);
+
 #endif /* _TSOCKET_H */
 
diff --git a/lib/tsocket/tsocket_connect.c b/lib/tsocket/tsocket_connect.c
new file mode 100644
index 0000000000..7a9d4b8381
--- /dev/null
+++ b/lib/tsocket/tsocket_connect.c
@@ -0,0 +1,122 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Stefan Metzmacher 2009
+
+     ** NOTE! The following LGPL license applies to the tevent
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/network.h"
+#include "tsocket.h"
+#include "tsocket_internal.h"
+
+struct tsocket_connect_state {
+	/* this structs are owned by the caller */
+	struct {
+		struct tsocket_context *sock;
+		const struct tsocket_address *dst;
+	} caller;
+};
+
+static void tsocket_connect_handler(struct tsocket_context *sock,
+				    void *private_data);
+
+struct tevent_req *tsocket_connect_send(struct tsocket_context *sock,
+					TALLOC_CTX *mem_ctx,
+					const struct tsocket_address *dst)
+{
+	struct tevent_req *req;
+	struct tsocket_connect_state *state;
+	int ret;
+	int err;
+	bool retry;
+	bool dummy;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct tsocket_connect_state);
+	if (!req) {
+		return NULL;
+	}
+
+	state->caller.sock	= sock;
+	state->caller.dst	= dst;
+
+	ret = tsocket_connect(state->caller.sock,
+			      state->caller.dst);
+	err = tsocket_error_from_errno(ret, errno, &retry);
+	if (retry) {
+		/* retry later */
+		goto async;
+	}
+	if (tevent_req_error(req, err)) {
+		goto post;
+	}
+
+	tevent_req_done(req);
+	goto post;
+
+ async:
+	ret = tsocket_set_readable_handler(state->caller.sock,
+					   tsocket_connect_handler,
+					   req);
+	err = tsocket_error_from_errno(ret, errno, &dummy);
+	if (tevent_req_error(req, err)) {
+		goto post;
+	}
+
+	return req;
+
+ post:
+	return tevent_req_post(req, sock->event.ctx);
+}
+
+static void tsocket_connect_handler(struct tsocket_context *sock,
+				    void *private_data)
+{
+	struct tevent_req *req = talloc_get_type(private_data,
+				 struct tevent_req);
+	struct tsocket_connect_state *state = tevent_req_data(req,
+					      struct tsocket_connect_state);
+	int ret;
+	int err;
+	bool retry;
+
+	ret = tsocket_get_status(state->caller.sock);
+	err = tsocket_error_from_errno(ret, errno, &retry);
+	if (retry) {
+		/* retry later */
+		return;
+	}
+	if (tevent_req_error(req, err)) {
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+int tsocket_connect_recv(struct tevent_req *req, int *perrno)
+{
+	int ret;
+
+	ret = tsocket_simple_int_recv(req, perrno);
+
+	tevent_req_received(req);
+	return ret;
+}
+
-- 
cgit