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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:47:29 +0000
commit4f5791ebd03eaec1c7da0865a383175b05102712 (patch)
tree8ce7b00f7a76baa386372422adebbe64510812d4 /source4/nbt_server/dgram/request.c
parentInitial commit. (diff)
downloadsamba-upstream.tar.xz
samba-upstream.zip
Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'source4/nbt_server/dgram/request.c')
-rw-r--r--source4/nbt_server/dgram/request.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/source4/nbt_server/dgram/request.c b/source4/nbt_server/dgram/request.c
new file mode 100644
index 0000000..ea2b6e8
--- /dev/null
+++ b/source4/nbt_server/dgram/request.c
@@ -0,0 +1,150 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ NBT datagram server
+
+ Copyright (C) Andrew Tridgell 2005
+
+ 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 "nbt_server/nbt_server.h"
+#include "samba/service_task.h"
+#include "lib/socket/socket.h"
+#include "libcli/resolve/resolve.h"
+#include "nbt_server/dgram/proto.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+#include "param/param.h"
+
+/*
+ a list of mailslots that we have static handlers for
+*/
+static const struct {
+ const char *mailslot_name;
+ dgram_mailslot_handler_t handler;
+} mailslot_handlers[] = {
+ /* Handle both NTLOGON and NETLOGON in the same function, as
+ * they are very similar */
+ { NBT_MAILSLOT_NETLOGON, nbtd_mailslot_netlogon_handler },
+ { NBT_MAILSLOT_NTLOGON, nbtd_mailslot_netlogon_handler },
+ { NBT_MAILSLOT_BROWSE, nbtd_mailslot_browse_handler }
+};
+
+/*
+ receive an incoming dgram request. This is used for general datagram
+ requests. Mailslot requests for our listening mailslots
+ are handled in the specific mailslot handlers
+*/
+void dgram_request_handler(struct nbt_dgram_socket *dgmsock,
+ struct nbt_dgram_packet *packet,
+ struct socket_address *src)
+{
+ DEBUG(0,("General datagram request from %s:%d\n", src->addr, src->port));
+ NDR_PRINT_DEBUG(nbt_dgram_packet, packet);
+}
+
+
+/*
+ setup the port 138 datagram listener for a given interface
+*/
+NTSTATUS nbtd_dgram_setup(struct nbtd_interface *iface, const char *bind_address)
+{
+ struct nbt_dgram_socket *bcast_dgmsock = NULL;
+ struct nbtd_server *nbtsrv = iface->nbtsrv;
+ struct socket_address *bcast_addr, *bind_addr;
+ NTSTATUS status;
+ TALLOC_CTX *tmp_ctx = talloc_new(iface);
+ /* the list of mailslots that we are interested in */
+ size_t i;
+
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (strcmp("0.0.0.0", iface->netmask) != 0) {
+ /* listen for broadcasts on port 138 */
+ bcast_dgmsock = nbt_dgram_socket_init(iface, nbtsrv->task->event_ctx);
+ if (!bcast_dgmsock) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ bcast_addr = socket_address_from_strings(tmp_ctx, bcast_dgmsock->sock->backend_name,
+ iface->bcast_address,
+ lpcfg_dgram_port(iface->nbtsrv->task->lp_ctx));
+ if (!bcast_addr) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = socket_listen(bcast_dgmsock->sock, bcast_addr, 0, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(tmp_ctx);
+ DEBUG(0,("Failed to bind to %s:%d - %s\n",
+ iface->bcast_address, lpcfg_dgram_port(iface->nbtsrv->task->lp_ctx),
+ nt_errstr(status)));
+ return status;
+ }
+
+ dgram_set_incoming_handler(bcast_dgmsock, dgram_request_handler, iface);
+ }
+
+ /* listen for unicasts on port 138 */
+ iface->dgmsock = nbt_dgram_socket_init(iface, nbtsrv->task->event_ctx);
+ if (!iface->dgmsock) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ bind_addr = socket_address_from_strings(tmp_ctx, iface->dgmsock->sock->backend_name,
+ bind_address, lpcfg_dgram_port(iface->nbtsrv->task->lp_ctx));
+ if (!bind_addr) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = socket_listen(iface->dgmsock->sock, bind_addr, 0, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(tmp_ctx);
+ DEBUG(0,("Failed to bind to %s:%d - %s\n",
+ bind_address, lpcfg_dgram_port(iface->nbtsrv->task->lp_ctx), nt_errstr(status)));
+ return status;
+ }
+
+ dgram_set_incoming_handler(iface->dgmsock, dgram_request_handler, iface);
+
+ talloc_free(tmp_ctx);
+
+ for (i=0;i<ARRAY_SIZE(mailslot_handlers);i++) {
+ /* note that we don't need to keep the pointer
+ to the dgmslot around - the callback is all
+ we need */
+ struct dgram_mailslot_handler *dgmslot;
+
+ if (bcast_dgmsock) {
+ dgmslot = dgram_mailslot_listen(bcast_dgmsock,
+ mailslot_handlers[i].mailslot_name,
+ mailslot_handlers[i].handler, iface);
+ NT_STATUS_HAVE_NO_MEMORY(dgmslot);
+ }
+
+ dgmslot = dgram_mailslot_listen(iface->dgmsock,
+ mailslot_handlers[i].mailslot_name,
+ mailslot_handlers[i].handler, iface);
+ NT_STATUS_HAVE_NO_MEMORY(dgmslot);
+ }
+
+ return NT_STATUS_OK;
+}