source4/libcli/smb2/find.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client find calls
   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/raw/libcliraw.h"
  24 #include "libcli/raw/raw_proto.h"
  25 #include "libcli/smb2/smb2.h"
  26 #include "libcli/smb2/smb2_calls.h"
  27
  28 /*
  29   send a find request
  30 */
  31 struct smb2_request *smb2_find_send(struct smb2_tree *tree, struct smb2_find *io)
  32 {
  33         struct smb2_request *req;
  34         NTSTATUS status;
  35
  36         req = smb2_request_init_tree(tree, SMB2_OP_FIND, 0x20, true, 0);
  37         if (req == NULL) return NULL;
  38
  39         SCVAL(req->out.body, 0x02, io->in.level);
  40         SCVAL(req->out.body, 0x03, io->in.continue_flags);
  41         SIVAL(req->out.body, 0x04, io->in.file_index);
  42         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
  43
  44         status = smb2_push_o16s16_string(&req->out, 0x18, io->in.pattern);
  45         if (!NT_STATUS_IS_OK(status)) {
  46                 talloc_free(req);
  47                 return NULL;
  48         }
  49
  50         SIVAL(req->out.body, 0x1C, io->in.max_response_size);
  51
  52         smb2_transport_send(req);
  53
  54         return req;
  55 }
  56
  57
  58 /*
  59   recv a find reply
  60 */
  61 NTSTATUS smb2_find_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
  62                            struct smb2_find *io)
  63 {
  64         NTSTATUS status;
  65
  66         if (!smb2_request_receive(req) ||
  67             smb2_request_is_error(req)) {
  68                 return smb2_request_destroy(req);
  69         }
  70
  71         SMB2_CHECK_PACKET_RECV(req, 0x08, true);
  72
  73         status = smb2_pull_o16s32_blob(&req->in, mem_ctx,
  74                                        req->in.body+0x02, &io->out.blob);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 return status;
  77         }
  78
  79         return smb2_request_destroy(req);
  80 }
  81
  82 /*
  83   sync find request
  84 */
  85 NTSTATUS smb2_find(struct smb2_tree *tree, TALLOC_CTX *mem_ctx,
  86                    struct smb2_find *io)
  87 {
  88         struct smb2_request *req = smb2_find_send(tree, io);
  89         return smb2_find_recv(req, mem_ctx, io);
  90 }
  91
  92
  93 /*
  94   a varient of smb2_find_recv that parses the resulting blob into
  95   smb_search_data structures
  96 */
  97 NTSTATUS smb2_find_level_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
  98                               uint8_t level, unsigned int *count,
  99                               union smb_search_data **io)
 100 {
 101         struct smb2_find f;
 102         NTSTATUS status;
 103         DATA_BLOB b;
 104         enum smb_search_data_level smb_level;
 105         unsigned int next_ofs=0;
 106
 107         switch (level) {
 108         case SMB2_FIND_DIRECTORY_INFO:
 109                 smb_level = RAW_SEARCH_DATA_DIRECTORY_INFO;
 110                 break;
 111         case SMB2_FIND_FULL_DIRECTORY_INFO:
 112                 smb_level = RAW_SEARCH_DATA_FULL_DIRECTORY_INFO;
 113                 break;
 114         case SMB2_FIND_BOTH_DIRECTORY_INFO:
 115                 smb_level = RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO;
 116                 break;
 117         case SMB2_FIND_NAME_INFO:
 118                 smb_level = RAW_SEARCH_DATA_NAME_INFO;
 119                 break;
 120         case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
 121                 smb_level = RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO;
 122                 break;
 123         case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
 124                 smb_level = RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO;
 125                 break;
 126         default:
 127                 return NT_STATUS_INVALID_INFO_CLASS;
 128         }
 129
 130         status = smb2_find_recv(req, mem_ctx, &f);
 131         NT_STATUS_NOT_OK_RETURN(status);
 132
 133         b = f.out.blob;
 134         *io = NULL;
 135         *count = 0;
 136
 137         do {
 138                 union smb_search_data *io2;
 139
 140                 io2 = talloc_realloc(mem_ctx, *io, union smb_search_data, (*count)+1);
 141                 if (io2 == NULL) {
 142                         data_blob_free(&f.out.blob);
 143                         talloc_free(*io);
 144                         return NT_STATUS_NO_MEMORY;
 145                 }
 146                 *io = io2;
 147
 148                 status = smb_raw_search_common(*io, smb_level, &b, (*io) + (*count),
 149                                                &next_ofs, STR_UNICODE);
 150
 151                 if (NT_STATUS_IS_OK(status) &&
 152                     next_ofs >= b.length) {
 153                         data_blob_free(&f.out.blob);
 154                         talloc_free(*io);
 155                         return NT_STATUS_INFO_LENGTH_MISMATCH;
 156                 }
 157
 158                 (*count)++;
 159
 160                 b = data_blob_const(b.data+next_ofs, b.length - next_ofs);
 161         } while (NT_STATUS_IS_OK(status) && next_ofs != 0);
 162
 163         data_blob_free(&f.out.blob);
 164
 165         return NT_STATUS_OK;
 166 }
 167
 168 /*
 169   a varient of smb2_find that parses the resulting blob into
 170   smb_search_data structures
 171 */
 172 NTSTATUS smb2_find_level(struct smb2_tree *tree, TALLOC_CTX *mem_ctx,
 173                          struct smb2_find *f,
 174                          unsigned int *count, union smb_search_data **io)
 175 {
 176         struct smb2_request *req;
 177
 178         req = smb2_find_send(tree, f);
 179         return smb2_find_level_recv(req, mem_ctx, f->in.level, count, io);
 180 }