lib/tsocket: add tsocket_sendto_send/recv()
authorStefan Metzmacher <metze@samba.org>
Tue, 10 Mar 2009 20:12:31 +0000 (21:12 +0100)
committerStefan Metzmacher <metze@samba.org>
Thu, 19 Mar 2009 15:25:54 +0000 (16:25 +0100)
metze

lib/tsocket/config.mk
lib/tsocket/tsocket.h
lib/tsocket/tsocket_sendto.c [new file with mode: 0644]

index 18cb8260e0ac2ddb4c88af103165322eb0537ffb..cd4225a1d3b32166a3185f4be65be53b2d50bbdf 100644 (file)
@@ -5,7 +5,8 @@ LIBTSOCKET_OBJ_FILES = $(addprefix ../lib/tsocket/, \
                                        tsocket.o \
                                        tsocket_helpers.o \
                                        tsocket_bsd.o \
                                        tsocket.o \
                                        tsocket_helpers.o \
                                        tsocket_bsd.o \
-                                       tsocket_recvfrom.o)
+                                       tsocket_recvfrom.o \
+                                       tsocket_sendto.o)
 
 PUBLIC_HEADERS += $(addprefix ../lib/tsocket/, \
                                 tsocket.h\
 
 PUBLIC_HEADERS += $(addprefix ../lib/tsocket/, \
                                 tsocket.h\
index 8cabd4263f6109662b7a2b1c3cda99dffb752bfd..7987571bc37fd9ae9f1ba029297af8757a4f8c25 100644 (file)
@@ -172,5 +172,12 @@ ssize_t tsocket_recvfrom_recv(struct tevent_req *req,
                              uint8_t **buf,
                              struct tsocket_address **src);
 
                              uint8_t **buf,
                              struct tsocket_address **src);
 
+struct tevent_req *tsocket_sendto_send(struct tsocket_context *sock,
+                                      TALLOC_CTX *mem_ctx,
+                                      const uint8_t *buf,
+                                      size_t len,
+                                      const struct tsocket_address *dst);
+ssize_t tsocket_sendto_recv(struct tevent_req *req, int *perrno);
+
 #endif /* _TSOCKET_H */
 
 #endif /* _TSOCKET_H */
 
diff --git a/lib/tsocket/tsocket_sendto.c b/lib/tsocket/tsocket_sendto.c
new file mode 100644 (file)
index 0000000..9486374
--- /dev/null
@@ -0,0 +1,136 @@
+/*
+   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_sendto_state {
+       /* this structs are owned by the caller */
+       struct {
+               struct tsocket_context *sock;
+               const uint8_t *buf;
+               size_t len;
+               const struct tsocket_address *dst;
+       } caller;
+
+       ssize_t ret;
+};
+
+static int tsocket_sendto_state_destructor(struct tsocket_sendto_state *state)
+{
+       if (state->caller.sock) {
+               tsocket_set_writeable_handler(state->caller.sock, NULL, NULL);
+       }
+       ZERO_STRUCT(state->caller);
+
+       return 0;
+}
+
+static void tsocket_sendto_handler(struct tsocket_context *sock,
+                                  void *private_data);
+
+struct tevent_req *tsocket_sendto_send(struct tsocket_context *sock,
+                                      TALLOC_CTX *mem_ctx,
+                                      const uint8_t *buf,
+                                      size_t len,
+                                      const struct tsocket_address *dst)
+{
+       struct tevent_req *req;
+       struct tsocket_sendto_state *state;
+       int ret;
+       int err;
+       bool dummy;
+
+       req = tevent_req_create(mem_ctx, &state,
+                               struct tsocket_sendto_state);
+       if (!req) {
+               return NULL;
+       }
+
+       state->caller.sock      = sock;
+       state->caller.buf       = buf;
+       state->caller.len       = len;
+       state->caller.dst       = dst;
+       state->ret              = -1;
+
+       talloc_set_destructor(state, tsocket_sendto_state_destructor);
+
+       ret = tsocket_set_writeable_handler(sock,
+                                           tsocket_sendto_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_sendto_handler(struct tsocket_context *sock,
+                                  void *private_data)
+{
+       struct tevent_req *req = talloc_get_type(private_data,
+                                struct tevent_req);
+       struct tsocket_sendto_state *state = tevent_req_data(req,
+                                            struct tsocket_sendto_state);
+       ssize_t ret;
+       int err;
+       bool retry;
+
+       ret = tsocket_sendto(state->caller.sock,
+                            state->caller.buf,
+                            state->caller.len,
+                            state->caller.dst);
+       err = tsocket_error_from_errno(ret, errno, &retry);
+       if (retry) {
+               /* retry later */
+               return;
+       }
+       if (tevent_req_error(req, err)) {
+               return;
+       }
+
+       state->ret = ret;
+
+       tevent_req_done(req);
+}
+
+ssize_t tsocket_sendto_recv(struct tevent_req *req, int *perrno)
+{
+       struct tsocket_sendto_state *state = tevent_req_data(req,
+                                            struct tsocket_sendto_state);
+       ssize_t ret;
+
+       ret = tsocket_simple_int_recv(req, perrno);
+       if (ret == 0) {
+               ret = state->ret;
+       }
+
+       tevent_req_received(req);
+       return ret;
+}