Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : handling for netlogon dgram requests
5 :
6 : Copyright (C) Andrew Tridgell 2005
7 :
8 : This program is free software; you can redistribute it and/or modify
9 : it under the terms of the GNU General Public License as published by
10 : the Free Software Foundation; either version 3 of the License, or
11 : (at your option) any later version.
12 :
13 : This program is distributed in the hope that it will be useful,
14 : but WITHOUT ANY WARRANTY; without even the implied warranty of
15 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 : GNU General Public License for more details.
17 :
18 : You should have received a copy of the GNU General Public License
19 : along with this program. If not, see <http://www.gnu.org/licenses/>.
20 : */
21 :
22 : #include "includes.h"
23 : #include "libcli/dgram/libdgram.h"
24 : #include "lib/socket/socket.h"
25 : #include "libcli/resolve/resolve.h"
26 : #include "librpc/gen_ndr/ndr_nbt.h"
27 :
28 : /*
29 : send a netlogon mailslot request
30 : */
31 10 : NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
32 : struct nbt_name *dest_name,
33 : struct socket_address *dest,
34 : const char *mailslot,
35 : struct nbt_name *src_name,
36 : struct nbt_netlogon_packet *request)
37 : {
38 : NTSTATUS status;
39 : enum ndr_err_code ndr_err;
40 : DATA_BLOB blob;
41 10 : TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
42 :
43 10 : ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, request,
44 : (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
45 10 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
46 0 : talloc_free(tmp_ctx);
47 0 : return ndr_map_error2ntstatus(ndr_err);
48 : }
49 :
50 :
51 10 : status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
52 : mailslot,
53 : dest_name, dest,
54 : src_name, &blob);
55 10 : talloc_free(tmp_ctx);
56 10 : return status;
57 : }
58 :
59 :
60 : /*
61 : send a netlogon mailslot reply
62 : */
63 10 : NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
64 : struct nbt_dgram_packet *request,
65 : const char *my_netbios_name,
66 : const char *mailslot_name,
67 : struct nbt_netlogon_response *reply)
68 : {
69 : NTSTATUS status;
70 : DATA_BLOB blob;
71 10 : TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
72 : struct nbt_name myname;
73 : struct socket_address *dest;
74 :
75 10 : status = push_nbt_netlogon_response(&blob, tmp_ctx, reply);
76 10 : if (!NT_STATUS_IS_OK(status)) {
77 0 : return status;
78 : }
79 :
80 10 : make_nbt_name_client(&myname, my_netbios_name);
81 :
82 10 : dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name,
83 10 : request->src_addr, request->src_port);
84 10 : if (!dest) {
85 0 : talloc_free(tmp_ctx);
86 0 : return NT_STATUS_NO_MEMORY;
87 : }
88 :
89 10 : status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
90 : mailslot_name,
91 : &request->data.msg.source_name,
92 : dest,
93 : &myname, &blob);
94 10 : talloc_free(tmp_ctx);
95 10 : return status;
96 : }
97 :
98 :
99 : /*
100 : parse a netlogon request. The packet must be a valid mailslot packet
101 : */
102 10 : NTSTATUS dgram_mailslot_netlogon_parse_request(TALLOC_CTX *mem_ctx,
103 : struct nbt_dgram_packet *dgram,
104 : struct nbt_netlogon_packet *netlogon)
105 : {
106 10 : DATA_BLOB data = dgram_mailslot_data(dgram);
107 : enum ndr_err_code ndr_err;
108 :
109 10 : ndr_err = ndr_pull_struct_blob(&data, mem_ctx, netlogon,
110 : (ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
111 10 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
112 0 : NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
113 0 : DEBUG(0,("Failed to parse netlogon packet of length %d: %s\n",
114 : (int)data.length, nt_errstr(status)));
115 0 : if (DEBUGLVL(10)) {
116 0 : (void)file_save("netlogon.dat", data.data, data.length);
117 : }
118 0 : return status;
119 : }
120 10 : return NT_STATUS_OK;
121 : }
122 :
123 : /*
124 : parse a netlogon response. The packet must be a valid mailslot packet
125 : */
126 10 : NTSTATUS dgram_mailslot_netlogon_parse_response(TALLOC_CTX *mem_ctx,
127 : struct nbt_dgram_packet *dgram,
128 : struct nbt_netlogon_response *netlogon)
129 : {
130 : NTSTATUS status;
131 10 : DATA_BLOB data = dgram_mailslot_data(dgram);
132 :
133 10 : status = pull_nbt_netlogon_response(&data, mem_ctx, netlogon);
134 10 : if (!NT_STATUS_IS_OK(status)) {
135 0 : return status;
136 : }
137 :
138 10 : return NT_STATUS_OK;
139 : }
140 :
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