Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 115 insertions, 0 deletions

diff --git a/source4/lib/messaging/messaging_send.c b/source4/lib/messaging/messaging_send.c
new file mode 100644
index 0000000..24cdce3
--- /dev/null
+++ b/source4/lib/messaging/messaging_send.c
@@ -0,0 +1,115 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Samba internal messaging functions (send).
+
+   Copyright (C) Andrew Tridgell 2004
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "messaging/messaging.h"
+#include "messaging/irpc.h"
+#include "lib/messaging/messages_dgm.h"
+#include "lib/messaging/messages_dgm_ref.h"
+#include "../source3/lib/messages_util.h"
+#include "messaging/messaging_internal.h"
+#include "lib/util/server_id_db.h"
+#include "cluster/cluster.h"
+#include "../lib/util/unix_privs.h"
+
+/*
+ * This file is for functions that can be called from auth_log without
+ * depending on all of dcerpc and so cause dep loops.
+ */
+
+/*
+  return a list of server ids for a server name
+*/
+NTSTATUS irpc_servers_byname(struct imessaging_context *msg_ctx,
+			     TALLOC_CTX *mem_ctx, const char *name,
+			     unsigned *num_servers,
+			     struct server_id **servers)
+{
+	int ret;
+
+	ret = server_id_db_lookup(msg_ctx->names, name, mem_ctx,
+				  num_servers, servers);
+	if (ret != 0) {
+		return map_nt_error_from_unix_common(ret);
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  Send a message to a particular server
+*/
+NTSTATUS imessaging_send(struct imessaging_context *msg, struct server_id server,
+			uint32_t msg_type, const DATA_BLOB *data)
+{
+	uint8_t hdr[MESSAGE_HDR_LENGTH];
+	struct iovec iov[2];
+	int num_iov, ret;
+	pid_t pid;
+	void *priv;
+
+	if (!cluster_node_equal(&msg->server_id, &server)) {
+		/* No cluster in source4... */
+		return NT_STATUS_OK;
+	}
+
+	message_hdr_put(hdr, msg_type, msg->server_id, server);
+
+	iov[0] = (struct iovec) { .iov_base = &hdr, .iov_len = sizeof(hdr) };
+	num_iov = 1;
+
+	if (data != NULL) {
+		iov[1] = (struct iovec) { .iov_base = data->data,
+					  .iov_len = data->length };
+		num_iov += 1;
+	}
+
+	pid = server.pid;
+	if (pid == 0) {
+		pid = getpid();
+	}
+
+	ret = messaging_dgm_send(pid, iov, num_iov, NULL, 0);
+
+	if (ret == EACCES) {
+		priv = root_privileges();
+		ret = messaging_dgm_send(pid, iov, num_iov, NULL, 0);
+		TALLOC_FREE(priv);
+	}
+
+	if (ret != 0) {
+		return map_nt_error_from_unix_common(ret);
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  Send a message to a particular server, with the message containing a single pointer
+*/
+NTSTATUS imessaging_send_ptr(struct imessaging_context *msg, struct server_id server,
+			    uint32_t msg_type, void *ptr)
+{
+	DATA_BLOB blob;
+
+	blob.data = (uint8_t *)&ptr;
+	blob.length = sizeof(void *);
+
+	return imessaging_send(msg, server, msg_type, &blob);
+}