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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /source4/lib/messaging/messaging_send.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'source4/lib/messaging/messaging_send.c')
-rw-r--r--source4/lib/messaging/messaging_send.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/source4/lib/messaging/messaging_send.c b/source4/lib/messaging/messaging_send.c
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+/*
+ 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);
+}