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, 223 insertions, 0 deletions

diff --git a/source4/libcli/resolve/nbtlist.c b/source4/libcli/resolve/nbtlist.c
new file mode 100644
index 0000000..13f38ff
--- /dev/null
+++ b/source4/libcli/resolve/nbtlist.c
@@ -0,0 +1,223 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   nbt list of addresses name resolution module
+
+   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/>.
+*/
+
+/*
+  TODO: we should lower the timeout, and add retries for each name
+*/
+
+#include "includes.h"
+#include "libcli/composite/composite.h"
+#include "system/network.h"
+#include "lib/socket/socket.h"
+#include "lib/socket/netif.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+#include "../libcli/nbt/libnbt.h"
+#include "param/param.h"
+#include "libcli/resolve/resolve.h"
+
+struct nbtlist_state {
+	uint16_t flags;
+	uint16_t port;
+	struct nbt_name name;
+	struct nbt_name_socket *nbtsock;
+	int num_queries;
+	struct nbt_name_request **queries;
+	struct nbt_name_query *io_queries;
+	struct socket_address **addrs;
+	char **names;
+	struct interface *ifaces;
+};
+
+/*
+  handle events during nbtlist name resolution
+*/
+static void nbtlist_handler(struct nbt_name_request *req)
+{
+	struct composite_context *c = talloc_get_type(req->async.private_data,
+						      struct composite_context);
+	struct nbtlist_state *state = talloc_get_type(c->private_data, struct nbtlist_state);
+	struct nbt_name_query *q;
+	int i;
+
+	for (i=0;i<state->num_queries;i++) {
+		if (req == state->queries[i]) break;
+	}
+
+	if (i == state->num_queries) {
+		/* not for us?! */
+		composite_error(c, NT_STATUS_INTERNAL_ERROR);
+		return;
+	}
+
+	q = &state->io_queries[i];
+
+	c->status = nbt_name_query_recv(req, state, q);
+
+	/* free the network resource directly */
+	talloc_free(state->nbtsock);
+	if (!composite_is_ok(c)) return;
+
+	if (q->out.num_addrs < 1) {
+		composite_error(c, NT_STATUS_UNEXPECTED_NETWORK_ERROR);
+		return;
+	}
+
+	state->addrs = talloc_array(state, struct socket_address *,
+				    q->out.num_addrs + 1);
+	if (composite_nomem(state->addrs, c)) return;
+
+	state->names = talloc_array(state, char *, q->out.num_addrs + 1);
+	if (composite_nomem(state->names, c)) return;
+
+	for (i=0;i<q->out.num_addrs;i++) {
+		state->addrs[i] = socket_address_from_strings(state->addrs,
+							      "ipv4",
+							      q->out.reply_addrs[i],
+							      state->port);
+		if (composite_nomem(state->addrs[i], c)) return;
+
+		state->names[i] = talloc_strdup(state->names, state->name.name);
+		if (composite_nomem(state->names[i], c)) return;
+	}
+	state->addrs[i] = NULL;
+	state->names[i] = NULL;
+
+	composite_done(c);
+}
+
+/*
+  nbtlist name resolution method - async send
+ */
+struct composite_context *resolve_name_nbtlist_send(TALLOC_CTX *mem_ctx,
+						    struct tevent_context *event_ctx,
+						    uint32_t flags,
+						    uint16_t port,
+						    struct nbt_name *name, 
+						    const char * const *address_list,
+						    struct interface *ifaces,
+						    uint16_t nbt_port,
+						    int nbt_timeout,
+						    bool broadcast,
+						    bool wins_lookup)
+{
+	struct composite_context *c;
+	struct nbtlist_state *state;
+	int i;
+
+	c = composite_create(mem_ctx, event_ctx);
+	if (c == NULL) return NULL;
+
+	if (flags & RESOLVE_NAME_FLAG_FORCE_DNS) {
+		composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND);
+		return c;
+	}
+
+	if (strlen(name->name) > 15) {
+		composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND);
+		return c;
+	}
+
+	state = talloc(c, struct nbtlist_state);
+	if (composite_nomem(state, c)) return c;
+	c->private_data = state;
+
+	state->flags = flags;
+	state->port = port;
+
+	c->status = nbt_name_dup(state, name, &state->name);
+	if (!composite_is_ok(c)) return c;
+
+	state->name.name = strupper_talloc(state, state->name.name);
+	if (composite_nomem(state->name.name, c)) return c;
+	if (state->name.scope) {
+		state->name.scope = strupper_talloc(state, state->name.scope);
+		if (composite_nomem(state->name.scope, c)) return c;
+	}
+
+	state->ifaces = talloc_reference(state, ifaces);
+
+	/*
+	 * we can't push long names on the wire,
+	 * so bail out here to give a useful error message
+	 */
+	if (strlen(state->name.name) > 15) {
+		composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND);
+		return c;
+	}
+
+	state->nbtsock = nbt_name_socket_init(state, event_ctx);
+	if (composite_nomem(state->nbtsock, c)) return c;
+
+	/* count the address_list size */
+	for (i=0;address_list[i];i++) /* noop */ ;
+
+	state->num_queries = i;
+	state->io_queries = talloc_array(state, struct nbt_name_query, state->num_queries);
+	if (composite_nomem(state->io_queries, c)) return c;
+
+	state->queries = talloc_array(state, struct nbt_name_request *, state->num_queries);
+	if (composite_nomem(state->queries, c)) return c;
+
+	for (i=0;i<state->num_queries;i++) {
+		state->io_queries[i].in.name        = state->name;
+		state->io_queries[i].in.dest_addr   = talloc_strdup(state->io_queries, address_list[i]);
+		state->io_queries[i].in.dest_port   = nbt_port;
+		if (composite_nomem(state->io_queries[i].in.dest_addr, c)) return c;
+
+		state->io_queries[i].in.broadcast   = broadcast;
+		state->io_queries[i].in.wins_lookup = wins_lookup;
+		state->io_queries[i].in.timeout     = nbt_timeout;
+		state->io_queries[i].in.retries     = 2;
+
+		state->queries[i] = nbt_name_query_send(state->nbtsock, &state->io_queries[i]);
+		if (composite_nomem(state->queries[i], c)) return c;
+
+		state->queries[i]->async.fn      = nbtlist_handler;
+		state->queries[i]->async.private_data = c;
+	}
+
+	return c;
+}
+
+/*
+  nbt list of addresses name resolution method - recv side
+ */
+NTSTATUS resolve_name_nbtlist_recv(struct composite_context *c, 
+				   TALLOC_CTX *mem_ctx,
+				   struct socket_address ***addrs,
+				   char ***names)
+{
+	NTSTATUS status;
+
+	status = composite_wait(c);
+
+	if (NT_STATUS_IS_OK(status)) {
+		struct nbtlist_state *state = talloc_get_type(c->private_data, struct nbtlist_state);
+		*addrs = talloc_steal(mem_ctx, state->addrs);
+		if (names) {
+			*names = talloc_steal(mem_ctx, state->names);
+		}
+	}
+
+	talloc_free(c);
+	return status;
+}
+