r26639: librpc: Pass iconv convenience on from RPC connection to NDR library, so...
[bbaumbach/samba-autobuild/.git] / source4 / libcli / dgram / netlogon.c
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 #include "param/param.h"
28
29 /* 
30    send a netlogon mailslot request 
31 */
32 NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
33                                       struct nbt_name *dest_name,
34                                       struct socket_address *dest,
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         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
42
43         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, 
44                                        lp_iconv_convenience(global_loadparm),
45                                        request,
46                                       (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
47         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
48                 talloc_free(tmp_ctx);
49                 return ndr_map_error2ntstatus(ndr_err);
50         }
51
52
53         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
54                                      NBT_MAILSLOT_NETLOGON,
55                                      dest_name, dest, 
56                                      src_name, &blob);
57         talloc_free(tmp_ctx);
58         return status;
59 }
60
61
62 /* 
63    send a netlogon mailslot reply
64 */
65 NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
66                                        struct nbt_dgram_packet *request,
67                                        const char *my_netbios_name,
68                                        const char *mailslot_name,
69                                        struct nbt_netlogon_packet *reply)
70 {
71         NTSTATUS status;
72         enum ndr_err_code ndr_err;
73         DATA_BLOB blob;
74         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
75         struct nbt_name myname;
76         struct socket_address *dest;
77
78         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, 
79                                        lp_iconv_convenience(global_loadparm),
80                                        reply,
81                                       (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
82         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
83                 talloc_free(tmp_ctx);
84                 return ndr_map_error2ntstatus(ndr_err);
85         }
86
87         make_nbt_name_client(&myname, my_netbios_name);
88
89         dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name, 
90                                            request->src_addr, request->src_port);
91         if (!dest) {
92                 talloc_free(tmp_ctx);
93                 return NT_STATUS_NO_MEMORY;
94         }
95
96         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE, 
97                                      mailslot_name,
98                                      &request->data.msg.source_name,
99                                      dest,
100                                      &myname, &blob);
101         talloc_free(tmp_ctx);
102         return status;
103 }
104
105
106 /*
107   parse a netlogon response. The packet must be a valid mailslot packet
108 */
109 NTSTATUS dgram_mailslot_netlogon_parse(struct dgram_mailslot_handler *dgmslot,
110                                        TALLOC_CTX *mem_ctx,
111                                        struct nbt_dgram_packet *dgram,
112                                        struct nbt_netlogon_packet *netlogon)
113 {
114         DATA_BLOB data = dgram_mailslot_data(dgram);
115         enum ndr_err_code ndr_err;
116
117         ndr_err = ndr_pull_struct_blob(&data, mem_ctx, lp_iconv_convenience(global_loadparm), netlogon,
118                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
119         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
120                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
121                 DEBUG(0,("Failed to parse netlogon packet of length %d: %s\n",
122                          (int)data.length, nt_errstr(status)));
123                 if (DEBUGLVL(10)) {
124                         file_save("netlogon.dat", data.data, data.length);
125                 }
126                 return status;
127         }
128         return NT_STATUS_OK;
129 }