wmi-1.3.16 from opsview.com

Samba/source/libcli/dgram/browse.c

@@ -0,0 +1,109 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   handling for browsing dgram requests
+
+   Copyright (C) Jelmer Vernooij 2005
+        Heavily based on ntlogon.c
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/dgram/libdgram.h"
+#include "lib/socket/socket.h"
+#include "libcli/resolve/resolve.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+
+NTSTATUS dgram_mailslot_browse_send(struct nbt_dgram_socket *dgmsock,
+				    struct nbt_name *dest_name,
+				    struct socket_address *dest,
+				    struct nbt_name *src_name,
+				    struct nbt_browse_packet *request)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, request, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+	status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
+				     NBT_MAILSLOT_BROWSE,
+				     dest_name, dest, 
+				     src_name, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+NTSTATUS dgram_mailslot_browse_reply(struct nbt_dgram_socket *dgmsock,
+				     struct nbt_dgram_packet *request,
+				     const char *mailslot_name,
+				     struct nbt_browse_packet *reply)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+	struct nbt_name myname;
+	struct socket_address *dest;
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, reply, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+	make_nbt_name_client(&myname, lp_netbios_name());
+
+	dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name, 
+					   request->src_addr, request->src_port);
+	if (!dest) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
+				     mailslot_name,
+				     &request->data.msg.source_name,
+				     dest,
+				     &myname, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+NTSTATUS dgram_mailslot_browse_parse(struct dgram_mailslot_handler *dgmslot,
+				     TALLOC_CTX *mem_ctx,
+				     struct nbt_dgram_packet *dgram,
+				     struct nbt_browse_packet *pkt)
+{
+	DATA_BLOB data = dgram_mailslot_data(dgram);
+	NTSTATUS status;
+
+	status = ndr_pull_struct_blob(&data, mem_ctx, pkt, 
+				      (ndr_pull_flags_fn_t)ndr_pull_nbt_browse_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Failed to parse browse packet of length %d\n", 
+			 (int)data.length));
+		if (DEBUGLVL(10)) {
+			file_save("browse.dat", data.data, data.length);
+		}
+	}
+	return status;
+}

Samba/source/libcli/dgram/dgramsocket.c

@@ -0,0 +1,242 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   low level socket handling for nbt dgram requests (UDP138)
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "lib/util/dlinklist.h"
+#include "libcli/dgram/libdgram.h"
+#include "lib/socket/socket.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+
+
+/*
+  handle recv events on a nbt dgram socket
+*/
+static void dgm_socket_recv(struct nbt_dgram_socket *dgmsock)
+{
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+	NTSTATUS status;
+	struct socket_address *src;
+	DATA_BLOB blob;
+	size_t nread, dsize;
+	struct nbt_dgram_packet *packet;
+	const char *mailslot_name;
+
+	status = socket_pending(dgmsock->sock, &dsize);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	blob = data_blob_talloc(tmp_ctx, NULL, dsize);
+	if (blob.data == NULL) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	status = socket_recvfrom(dgmsock->sock, blob.data, blob.length, &nread,
+				 tmp_ctx, &src);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+	blob.length = nread;
+
+	DEBUG(2,("Received dgram packet of length %d from %s:%d\n", 
+		 (int)blob.length, src->addr, src->port));
+
+	packet = talloc(tmp_ctx, struct nbt_dgram_packet);
+	if (packet == NULL) {
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	/* parse the request */
+	status = ndr_pull_struct_blob(&blob, packet, packet, 
+				      (ndr_pull_flags_fn_t)ndr_pull_nbt_dgram_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(2,("Failed to parse incoming NBT DGRAM packet - %s\n",
+			 nt_errstr(status)));
+		talloc_free(tmp_ctx);
+		return;
+	}
+
+	/* if this is a mailslot message, then see if we can dispatch it to a handler */
+	mailslot_name = dgram_mailslot_name(packet);
+	if (mailslot_name) {
+		struct dgram_mailslot_handler *dgmslot;
+		dgmslot = dgram_mailslot_find(dgmsock, mailslot_name);
+		if (dgmslot) {
+			dgmslot->handler(dgmslot, packet, src);
+		} else {
+			DEBUG(2,("No mailslot handler for '%s'\n", mailslot_name));
+		}
+	} else {
+		/* dispatch if there is a general handler */
+		if (dgmsock->incoming.handler) {
+			dgmsock->incoming.handler(dgmsock, packet, src);
+		}
+	}
+
+	talloc_free(tmp_ctx);
+}
+
+
+/*
+  handle send events on a nbt dgram socket
+*/
+static void dgm_socket_send(struct nbt_dgram_socket *dgmsock)
+{
+	struct nbt_dgram_request *req;
+	NTSTATUS status;
+
+	while ((req = dgmsock->send_queue)) {
+		size_t len;
+		
+		len = req->encoded.length;
+		status = socket_sendto(dgmsock->sock, &req->encoded, &len,
+				       req->dest);
+		if (NT_STATUS_IS_ERR(status)) {
+			DEBUG(3,("Failed to send datagram of length %u to %s:%d: %s\n",
+				 (unsigned)req->encoded.length, req->dest->addr, req->dest->port, 
+				 nt_errstr(status)));
+			DLIST_REMOVE(dgmsock->send_queue, req);
+			talloc_free(req);
+			continue;
+		}
+
+		if (!NT_STATUS_IS_OK(status)) return;
+
+		DLIST_REMOVE(dgmsock->send_queue, req);
+		talloc_free(req);
+	}
+
+	EVENT_FD_NOT_WRITEABLE(dgmsock->fde);
+	return;
+}
+
+
+/*
+  handle fd events on a nbt_dgram_socket
+*/
+static void dgm_socket_handler(struct event_context *ev, struct fd_event *fde,
+			       uint16_t flags, void *private)
+{
+	struct nbt_dgram_socket *dgmsock = talloc_get_type(private, 
+							   struct nbt_dgram_socket);
+	if (flags & EVENT_FD_WRITE) {
+		dgm_socket_send(dgmsock);
+	} 
+	if (flags & EVENT_FD_READ) {
+		dgm_socket_recv(dgmsock);
+	}
+}
+
+/*
+  initialise a nbt_dgram_socket. The event_ctx is optional, if provided
+  then operations will use that event context
+*/
+struct nbt_dgram_socket *nbt_dgram_socket_init(TALLOC_CTX *mem_ctx, 
+					      struct event_context *event_ctx)
+{
+	struct nbt_dgram_socket *dgmsock;
+	NTSTATUS status;
+
+	dgmsock = talloc(mem_ctx, struct nbt_dgram_socket);
+	if (dgmsock == NULL) goto failed;
+
+	if (event_ctx == NULL) {
+		dgmsock->event_ctx = event_context_init(dgmsock);
+	} else {
+		dgmsock->event_ctx = talloc_reference(dgmsock, event_ctx);
+	}
+	if (dgmsock->event_ctx == NULL) goto failed;
+
+	status = socket_create("ip", SOCKET_TYPE_DGRAM, &dgmsock->sock, 0);
+	if (!NT_STATUS_IS_OK(status)) goto failed;
+
+	socket_set_option(dgmsock->sock, "SO_BROADCAST", "1");
+
+	talloc_steal(dgmsock, dgmsock->sock);
+
+	dgmsock->fde = event_add_fd(dgmsock->event_ctx, dgmsock, 
+				    socket_get_fd(dgmsock->sock), 0,
+				    dgm_socket_handler, dgmsock);
+
+	dgmsock->send_queue = NULL;
+	dgmsock->incoming.handler = NULL;
+	dgmsock->mailslot_handlers = NULL;
+	
+	return dgmsock;
+
+failed:
+	talloc_free(dgmsock);
+	return NULL;
+}
+
+
+/*
+  setup a handler for generic incoming requests
+*/
+NTSTATUS dgram_set_incoming_handler(struct nbt_dgram_socket *dgmsock,
+				    void (*handler)(struct nbt_dgram_socket *, 
+						    struct nbt_dgram_packet *, 
+						    struct socket_address *),
+				    void *private)
+{
+	dgmsock->incoming.handler = handler;
+	dgmsock->incoming.private = private;
+	EVENT_FD_READABLE(dgmsock->fde);
+	return NT_STATUS_OK;
+}
+
+
+/*
+  queue a datagram for send
+*/
+NTSTATUS nbt_dgram_send(struct nbt_dgram_socket *dgmsock,
+			struct nbt_dgram_packet *packet,
+			struct socket_address *dest)
+{
+	struct nbt_dgram_request *req;
+	NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+	req = talloc(dgmsock, struct nbt_dgram_request);
+	if (req == NULL) goto failed;
+
+	req->dest = dest;
+	if (talloc_reference(req, dest) == NULL) goto failed;
+
+	status = ndr_push_struct_blob(&req->encoded, req, packet, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_dgram_packet);
+	if (!NT_STATUS_IS_OK(status)) goto failed;
+
+	DLIST_ADD_END(dgmsock->send_queue, req, struct nbt_dgram_request *);
+
+	EVENT_FD_WRITEABLE(dgmsock->fde);
+
+	return NT_STATUS_OK;
+
+failed:
+	talloc_free(req);
+	return status;
+}

Samba/source/libcli/dgram/libdgram.h

@@ -0,0 +1,163 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   a raw async NBT DGRAM library
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "librpc/gen_ndr/nbt.h"
+
+/*
+  a datagram name request
+*/
+struct nbt_dgram_request {
+	struct nbt_dgram_request *next, *prev;
+
+	/* where to send the request */
+	struct socket_address *dest;
+
+	/* the encoded request */
+	DATA_BLOB encoded;
+};
+
+/*
+  context structure for operations on dgram packets
+*/
+struct nbt_dgram_socket {
+	struct socket_context *sock;
+	struct event_context *event_ctx;
+
+	/* the fd event */
+	struct fd_event *fde;
+
+	/* a queue of outgoing requests */
+	struct nbt_dgram_request *send_queue;
+
+	/* a list of mailslot handlers */
+	struct dgram_mailslot_handler *mailslot_handlers;
+
+	/* what to do with incoming request packets */
+	struct {
+		void (*handler)(struct nbt_dgram_socket *, struct nbt_dgram_packet *, 
+				struct socket_address *src);
+		void *private;
+	} incoming;
+};
+
+
+/*
+  the mailslot code keeps a list of mailslot handlers. A mailslot
+  handler is a function that receives incoming packets for a specific
+  mailslot name. When a caller needs to send a mailslot and wants to
+  get a reply then it needs to register itself as listening for
+  incoming packets on the reply mailslot
+*/
+
+typedef void (*dgram_mailslot_handler_t)(struct dgram_mailslot_handler *, 
+					 struct nbt_dgram_packet *, 
+					 struct socket_address *src);
+
+struct dgram_mailslot_handler {
+	struct dgram_mailslot_handler *next, *prev;
+
+	struct nbt_dgram_socket *dgmsock;
+	const char *mailslot_name;
+
+	dgram_mailslot_handler_t handler;
+	void *private;
+};
+
+
+/* prototypes */
+NTSTATUS nbt_dgram_send(struct nbt_dgram_socket *dgmsock,
+			struct nbt_dgram_packet *packet,
+			struct socket_address *dest);
+NTSTATUS dgram_set_incoming_handler(struct nbt_dgram_socket *dgmsock,
+				    void (*handler)(struct nbt_dgram_socket *, 
+						    struct nbt_dgram_packet *, 
+						    struct socket_address *),
+				    void *private);
+struct nbt_dgram_socket *nbt_dgram_socket_init(TALLOC_CTX *mem_ctx, 
+					       struct event_context *event_ctx);
+
+const char *dgram_mailslot_name(struct nbt_dgram_packet *packet);
+struct dgram_mailslot_handler *dgram_mailslot_find(struct nbt_dgram_socket *dgmsock,
+						   const char *mailslot_name);
+struct dgram_mailslot_handler *dgram_mailslot_listen(struct nbt_dgram_socket *dgmsock,
+						     const char *mailslot_name,
+						     dgram_mailslot_handler_t handler,
+						     void *private);
+struct dgram_mailslot_handler *dgram_mailslot_temp(struct nbt_dgram_socket *dgmsock,
+						   const char *mailslot_name,
+						   dgram_mailslot_handler_t handler,
+						   void *private);
+DATA_BLOB dgram_mailslot_data(struct nbt_dgram_packet *dgram);
+
+
+NTSTATUS dgram_mailslot_send(struct nbt_dgram_socket *dgmsock,
+			     enum dgram_msg_type msg_type,
+			     const char *mailslot_name,
+			     struct nbt_name *dest_name,
+			     struct socket_address *dest,
+			     struct nbt_name *src_name,
+			     DATA_BLOB *request);
+
+NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
+				      struct nbt_name *dest_name,
+				      struct socket_address *dest,
+				      struct nbt_name *src_name,
+				      struct nbt_netlogon_packet *request);
+NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
+				       struct nbt_dgram_packet *request,
+				       const char *mailslot_name,
+				       struct nbt_netlogon_packet *reply);
+NTSTATUS dgram_mailslot_netlogon_parse(struct dgram_mailslot_handler *dgmslot,
+				       TALLOC_CTX *mem_ctx,
+				       struct nbt_dgram_packet *dgram,
+				       struct nbt_netlogon_packet *netlogon);
+
+NTSTATUS dgram_mailslot_ntlogon_send(struct nbt_dgram_socket *dgmsock,
+				     enum dgram_msg_type msg_type,
+				     struct nbt_name *dest_name,
+				     struct socket_address *dest,
+				     struct nbt_name *src_name,
+				     struct nbt_ntlogon_packet *request);
+NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
+				       struct nbt_dgram_packet *request,
+				       const char *mailslot_name,
+				       struct nbt_ntlogon_packet *reply);
+NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
+				       TALLOC_CTX *mem_ctx,
+				       struct nbt_dgram_packet *dgram,
+				       struct nbt_ntlogon_packet *ntlogon);
+
+NTSTATUS dgram_mailslot_browse_send(struct nbt_dgram_socket *dgmsock,
+				    struct nbt_name *dest_name,
+				    struct socket_address *dest,
+				    struct nbt_name *src_name,
+				    struct nbt_browse_packet *request);
+
+NTSTATUS dgram_mailslot_browse_reply(struct nbt_dgram_socket *dgmsock,
+				     struct nbt_dgram_packet *request,
+				     const char *mailslot_name,
+				     struct nbt_browse_packet *reply);
+
+NTSTATUS dgram_mailslot_browse_parse(struct dgram_mailslot_handler *dgmslot,
+				     TALLOC_CTX *mem_ctx,
+				     struct nbt_dgram_packet *dgram,
+				     struct nbt_browse_packet *pkt);

Samba/source/libcli/dgram/mailslot.c

@@ -0,0 +1,234 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   packet handling for mailslot requests. 
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+   This implements "Class 2 mailslots", i.e. the communication mechanism 
+   used for all mailslot packets smaller than 425 bytes. 
+
+   "Class 1 mailslots" (which use SMB) are used for messages larger 
+   than 426 bytes and are supported on some systems. These are not implemented
+   in Samba4 yet, as there don't appear to be any core services that use
+   them.
+
+   425 and 426-byte sized messages are not supported at all.
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "lib/util/dlinklist.h"
+#include "libcli/dgram/libdgram.h"
+#include "lib/socket/socket.h"
+
+/*
+  destroy a mailslot handler
+*/
+static int dgram_mailslot_destructor(struct dgram_mailslot_handler *dgmslot)
+{
+	DLIST_REMOVE(dgmslot->dgmsock->mailslot_handlers, dgmslot);
+	return 0;
+}
+
+/*
+  start listening on a mailslot. talloc_free() the handle to stop listening
+*/
+struct dgram_mailslot_handler *dgram_mailslot_listen(struct nbt_dgram_socket *dgmsock,
+						     const char *mailslot_name,
+						     dgram_mailslot_handler_t handler,
+						     void *private)
+{
+	struct dgram_mailslot_handler *dgmslot;
+
+	dgmslot = talloc(dgmsock, struct dgram_mailslot_handler);
+	if (dgmslot == NULL) return NULL;
+
+	dgmslot->dgmsock = dgmsock;
+	dgmslot->mailslot_name = talloc_strdup(dgmslot, mailslot_name);
+	if (dgmslot->mailslot_name == NULL) {
+		talloc_free(dgmslot);
+		return NULL;
+	}
+	dgmslot->handler = handler;
+	dgmslot->private = private;
+
+	DLIST_ADD(dgmsock->mailslot_handlers, dgmslot);
+	talloc_set_destructor(dgmslot, dgram_mailslot_destructor);
+
+	EVENT_FD_READABLE(dgmsock->fde);
+
+	return dgmslot;
+}
+
+/*
+  find the handler for a specific mailslot name
+*/
+struct dgram_mailslot_handler *dgram_mailslot_find(struct nbt_dgram_socket *dgmsock,
+						   const char *mailslot_name)
+{
+	struct dgram_mailslot_handler *h;
+	for (h=dgmsock->mailslot_handlers;h;h=h->next) {
+		if (strcasecmp(h->mailslot_name, mailslot_name) == 0) {
+			return h;
+		}
+	}
+	return NULL;
+}
+
+/*
+  check that a datagram packet is a valid mailslot request, and return the 
+  mailslot name if it is, otherwise return NULL
+*/
+const char *dgram_mailslot_name(struct nbt_dgram_packet *packet)
+{
+	if (packet->msg_type != DGRAM_DIRECT_UNIQUE &&
+	    packet->msg_type != DGRAM_DIRECT_GROUP &&
+	    packet->msg_type != DGRAM_BCAST) {
+		return NULL;
+	}
+	if (packet->data.msg.dgram_body_type != DGRAM_SMB) return NULL;
+	if (packet->data.msg.body.smb.smb_command != SMB_TRANSACTION) return NULL;
+	return packet->data.msg.body.smb.body.trans.mailslot_name;
+}
+
+
+/*
+  create a temporary mailslot handler for a reply mailslot, allocating
+  a new mailslot name using the given base name and a random integer extension
+*/
+struct dgram_mailslot_handler *dgram_mailslot_temp(struct nbt_dgram_socket *dgmsock,
+						   const char *mailslot_name,
+						   dgram_mailslot_handler_t handler,
+						   void *private)
+{
+	char *name;
+	int i;
+	struct dgram_mailslot_handler *dgmslot;
+
+	/* try a 100 times at most */
+	for (i=0;i<100;i++) {
+		name = talloc_asprintf(dgmsock, "%s%03u", 
+				       mailslot_name,
+				       generate_random() % 1000);
+		if (name == NULL) return NULL;
+		if (dgram_mailslot_find(dgmsock, name)) {
+			talloc_free(name);
+			return NULL;
+		}
+		dgmslot = dgram_mailslot_listen(dgmsock, name, handler, private);
+		talloc_free(name);
+		if (dgmslot != NULL) {
+			return dgmslot;
+		}
+	}
+	DEBUG(2,("Unable to create temporary mailslot from %s\n", mailslot_name));
+	return NULL;
+}
+
+
+/*
+  send a mailslot request
+*/
+NTSTATUS dgram_mailslot_send(struct nbt_dgram_socket *dgmsock,
+			     enum dgram_msg_type msg_type,
+			     const char *mailslot_name,
+			     struct nbt_name *dest_name,
+			     struct socket_address *_dest,
+			     struct nbt_name *src_name,
+			     DATA_BLOB *request)
+{
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+	struct nbt_dgram_packet packet;
+	struct socket_address *dest;
+	struct dgram_message *msg;
+	struct dgram_smb_packet *smb;
+	struct smb_trans_body *trans;
+	struct socket_address *src;
+	NTSTATUS status;
+
+	if (_dest->port == 0) {
+		dest = socket_address_from_strings(tmp_ctx, _dest->family, 
+						   _dest->addr, lp_dgram_port());
+	} else {
+		dest = _dest;
+	}
+	if (!dest) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ZERO_STRUCT(packet);
+	packet.msg_type = msg_type;
+	packet.flags = DGRAM_FLAG_FIRST | DGRAM_NODE_NBDD;
+	packet.dgram_id = generate_random() % UINT16_MAX;
+	src = socket_get_my_addr(dgmsock->sock, tmp_ctx);
+	if (!src) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	packet.src_addr = src->addr;
+	packet.src_port = src->port;
+
+	msg = &packet.data.msg;
+	/* this length calculation is very crude - it should be based on gensize
+	   calls */
+	msg->length = 138 + strlen(mailslot_name) + request->length;
+	msg->offset = 0;
+
+	msg->source_name = *src_name;
+	msg->dest_name = *dest_name;
+	msg->dgram_body_type = DGRAM_SMB;
+
+	smb = &msg->body.smb;
+	smb->smb_command = SMB_TRANSACTION;
+
+	trans = &smb->body.trans;
+	trans->total_data_count = request->length;
+	trans->timeout     = 1000;
+	trans->data_count  = request->length;
+	trans->data_offset = 70 + strlen(mailslot_name);
+	trans->opcode      = 1; /* write mail slot */
+	trans->priority    = 1;
+	trans->class       = 2;
+	trans->mailslot_name = mailslot_name;
+	trans->data = *request;
+
+	status = nbt_dgram_send(dgmsock, &packet, dest);
+
+	talloc_free(tmp_ctx);
+
+	return status;
+}
+
+/*
+  return the mailslot data portion from a mailslot packet
+*/
+DATA_BLOB dgram_mailslot_data(struct nbt_dgram_packet *dgram)
+{
+	struct smb_trans_body *trans = &dgram->data.msg.body.smb.body.trans;
+	DATA_BLOB ret = trans->data;
+	int pad = trans->data_offset - (70 + strlen(trans->mailslot_name));
+
+	if (pad < 0 || pad > ret.length) {
+		DEBUG(2,("Badly formatted data in mailslot - pad = %d\n", pad));
+		return data_blob(NULL, 0);
+	}
+	ret.data += pad;
+	ret.length -= pad;
+	return ret;	
+}

Samba/source/libcli/dgram/netlogon.c

@@ -0,0 +1,120 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   handling for netlogon dgram requests
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/dgram/libdgram.h"
+#include "lib/socket/socket.h"
+#include "libcli/resolve/resolve.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+
+/* 
+   send a netlogon mailslot request 
+*/
+NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
+				      struct nbt_name *dest_name,
+				      struct socket_address *dest,
+				      struct nbt_name *src_name,
+				      struct nbt_netlogon_packet *request)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, request, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+
+	status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
+				     NBT_MAILSLOT_NETLOGON,
+				     dest_name, dest, 
+				     src_name, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/* 
+   send a netlogon mailslot reply
+*/
+NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
+				       struct nbt_dgram_packet *request,
+				       const char *mailslot_name,
+				       struct nbt_netlogon_packet *reply)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+	struct nbt_name myname;
+	struct socket_address *dest;
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, reply, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+	make_nbt_name_client(&myname, lp_netbios_name());
+
+	dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name, 
+					   request->src_addr, request->src_port);
+	if (!dest) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
+				     mailslot_name,
+				     &request->data.msg.source_name,
+				     dest,
+				     &myname, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/*
+  parse a netlogon response. The packet must be a valid mailslot packet
+*/
+NTSTATUS dgram_mailslot_netlogon_parse(struct dgram_mailslot_handler *dgmslot,
+				       TALLOC_CTX *mem_ctx,
+				       struct nbt_dgram_packet *dgram,
+				       struct nbt_netlogon_packet *netlogon)
+{
+	DATA_BLOB data = dgram_mailslot_data(dgram);
+	NTSTATUS status;
+
+	status = ndr_pull_struct_blob(&data, mem_ctx, netlogon, 
+				      (ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Failed to parse netlogon packet of length %d\n", 
+			 (int)data.length));
+		if (DEBUGLVL(10)) {
+			file_save("netlogon.dat", data.data, data.length);
+		}
+	}
+	return status;
+}

Samba/source/libcli/dgram/ntlogon.c

@@ -0,0 +1,122 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   handling for ntlogon dgram requests
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/dgram/libdgram.h"
+#include "lib/socket/socket.h"
+#include "libcli/resolve/resolve.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+
+/* 
+   send a ntlogon mailslot request 
+*/
+NTSTATUS dgram_mailslot_ntlogon_send(struct nbt_dgram_socket *dgmsock,
+				     enum dgram_msg_type msg_type,
+				     struct nbt_name *dest_name,
+				     struct socket_address *dest,
+				     struct nbt_name *src_name,
+				     struct nbt_ntlogon_packet *request)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, request, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+
+	status = dgram_mailslot_send(dgmsock, msg_type,
+				     NBT_MAILSLOT_NTLOGON,
+				     dest_name, dest, 
+				     src_name, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/* 
+   send a ntlogon mailslot reply
+*/
+NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
+				      struct nbt_dgram_packet *request,
+				      const char *mailslot_name,
+				      struct nbt_ntlogon_packet *reply)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
+	struct nbt_name myname;
+	struct socket_address *dest;
+
+	status = ndr_push_struct_blob(&blob, tmp_ctx, reply, 
+				      (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(tmp_ctx);
+		return status;
+	}
+
+	make_nbt_name_client(&myname, lp_netbios_name());
+
+	dest = socket_address_from_strings(tmp_ctx, 
+					   dgmsock->sock->backend_name, 
+					   request->src_addr, request->src_port);
+	if (!dest) {
+		talloc_free(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
+				     mailslot_name,
+				     &request->data.msg.source_name,
+				     dest,
+				     &myname, &blob);
+	talloc_free(tmp_ctx);
+	return status;
+}
+
+
+/*
+  parse a ntlogon response. The packet must be a valid mailslot packet
+*/
+NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
+				      TALLOC_CTX *mem_ctx,
+				      struct nbt_dgram_packet *dgram,
+				      struct nbt_ntlogon_packet *ntlogon)
+{
+	DATA_BLOB data = dgram_mailslot_data(dgram);
+	NTSTATUS status;
+
+	status = ndr_pull_struct_blob(&data, mem_ctx, ntlogon, 
+				      (ndr_pull_flags_fn_t)ndr_pull_nbt_ntlogon_packet);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Failed to parse ntlogon packet of length %d\n", 
+			 (int)data.length));
+		if (DEBUGLVL(10)) {
+			file_save("ntlogon.dat", data.data, data.length);
+		}
+	}
+	return status;
+}