source: branches/samba-3.5.x/source4/smb_server/smb2/find.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 5.1 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 SMB2 Find
4 Copyright (C) Andrew Tridgell 2003
5 Copyright (c) Stefan Metzmacher 2006
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20/*
21 This file handles the parsing of transact2 requests
22*/
23
24#include "includes.h"
25#include "libcli/smb2/smb2.h"
26#include "libcli/smb2/smb2_calls.h"
27#include "smb_server/smb_server.h"
28#include "smb_server/smb2/smb2_server.h"
29#include "ntvfs/ntvfs.h"
30
31
32/* a structure to encapsulate the state information about an in-progress ffirst/fnext operation */
33struct smb2srv_find_state {
34 struct smb2srv_request *req;
35 struct smb2_find *info;
36 union smb_search_first *ff;
37 union smb_search_next *fn;
38 uint32_t last_entry_offset;
39};
40
41/* callback function for SMB2 Find */
42static bool smb2srv_find_callback(void *private_data, const union smb_search_data *file)
43{
44 struct smb2srv_find_state *state = talloc_get_type(private_data, struct smb2srv_find_state);
45 struct smb2_find *info = state->info;
46 uint32_t old_length;
47 NTSTATUS status;
48
49 old_length = info->out.blob.length;
50
51 status = smbsrv_push_passthru_search(state, &info->out.blob, info->data_level, file, STR_UNICODE);
52 if (!NT_STATUS_IS_OK(status) ||
53 info->out.blob.length > info->in.max_response_size) {
54 /* restore the old length and tell the backend to stop */
55 smbsrv_blob_grow_data(state, &info->out.blob, old_length);
56 return false;
57 }
58
59 state->last_entry_offset = old_length;
60
61 return true;
62}
63
64static void smb2srv_find_send(struct ntvfs_request *ntvfs)
65{
66 struct smb2srv_request *req;
67 struct smb2srv_find_state *state;
68
69 SMB2SRV_CHECK_ASYNC_STATUS(state, struct smb2srv_find_state);
70 SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x08, true, state->info->out.blob.length));
71
72 if (state->info->out.blob.length > 0) {
73 SIVAL(state->info->out.blob.data + state->last_entry_offset, 0, 0);
74 }
75
76 SMB2SRV_CHECK(smb2_push_o16s32_blob(&req->out, 0x02, state->info->out.blob));
77
78 smb2srv_send_reply(req);
79}
80
81static NTSTATUS smb2srv_find_backend(struct smb2srv_find_state *state)
82{
83 struct smb2_find *info = state->info;
84
85 switch (info->in.level) {
86 case SMB2_FIND_DIRECTORY_INFO:
87 info->data_level = RAW_SEARCH_DATA_DIRECTORY_INFO;
88 break;
89
90 case SMB2_FIND_FULL_DIRECTORY_INFO:
91 info->data_level = RAW_SEARCH_DATA_FULL_DIRECTORY_INFO;
92 break;
93
94 case SMB2_FIND_BOTH_DIRECTORY_INFO:
95 info->data_level = RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO;
96 break;
97
98 case SMB2_FIND_NAME_INFO:
99 info->data_level = RAW_SEARCH_DATA_NAME_INFO;
100 break;
101
102 case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
103 info->data_level = RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO;
104 break;
105
106 case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
107 info->data_level = RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO;
108 break;
109
110 default:
111 return NT_STATUS_FOOBAR;
112 }
113
114 if (info->in.continue_flags & SMB2_CONTINUE_FLAG_REOPEN) {
115 state->ff = talloc(state, union smb_search_first);
116 NT_STATUS_HAVE_NO_MEMORY(state->ff);
117
118 state->ff->smb2 = *info;
119 state->info = &state->ff->smb2;
120 ZERO_STRUCT(state->ff->smb2.out);
121
122 return ntvfs_search_first(state->req->ntvfs, state->ff, state, smb2srv_find_callback);
123 } else {
124 state->fn = talloc(state, union smb_search_next);
125 NT_STATUS_HAVE_NO_MEMORY(state->fn);
126
127 state->fn->smb2 = *info;
128 state->info = &state->fn->smb2;
129 ZERO_STRUCT(state->fn->smb2.out);
130
131 return ntvfs_search_next(state->req->ntvfs, state->fn, state, smb2srv_find_callback);
132 }
133
134 /* should not be reached */
135 return NT_STATUS_INTERNAL_ERROR;
136}
137
138void smb2srv_find_recv(struct smb2srv_request *req)
139{
140 struct smb2srv_find_state *state;
141 struct smb2_find *info;
142
143 SMB2SRV_CHECK_BODY_SIZE(req, 0x20, true);
144 SMB2SRV_TALLOC_IO_PTR(info, struct smb2_find);
145 /* this overwrites req->io_ptr !*/
146 SMB2SRV_TALLOC_IO_PTR(state, struct smb2srv_find_state);
147 state->req = req;
148 state->info = info;
149 state->ff = NULL;
150 state->fn = NULL;
151 state->last_entry_offset= 0;
152 SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_find_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
153
154 info->level = RAW_SEARCH_SMB2;
155 info->data_level = RAW_SEARCH_DATA_GENERIC;/* will be overwritten later */
156 info->in.level = CVAL(req->in.body, 0x02);
157 info->in.continue_flags = CVAL(req->in.body, 0x03);
158 info->in.file_index = IVAL(req->in.body, 0x04);
159 info->in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
160 SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, info, req->in.body+0x18, &info->in.pattern));
161 info->in.max_response_size = IVAL(req->in.body, 0x1C);
162
163 /* the VFS backend does not yet handle NULL patterns */
164 if (info->in.pattern == NULL) {
165 info->in.pattern = "";
166 }
167
168 SMB2SRV_CHECK_FILE_HANDLE(info->in.file.ntvfs);
169 SMB2SRV_CALL_NTVFS_BACKEND(smb2srv_find_backend(state));
170}
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