source4/libcli/smb2/util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client utility functions
   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 #include "libcli/smb_composite/smb_composite.h"
  28 #include "librpc/gen_ndr/ndr_security.h"
  29
  30 /*
  31   simple close wrapper with SMB2
  32 */
  33 NTSTATUS smb2_util_close(struct smb2_tree *tree, struct smb2_handle h)
  34 {
  35         struct smb2_close c;
  36
  37         ZERO_STRUCT(c);
  38         c.in.file.handle = h;
  39
  40         return smb2_close(tree, &c);
  41 }
  42
  43 /*
  44   unlink a file with SMB2
  45 */
  46 NTSTATUS smb2_util_unlink(struct smb2_tree *tree, const char *fname)
  47 {
  48         union smb_unlink io;
  49
  50         ZERO_STRUCT(io);
  51         io.unlink.in.pattern = fname;
  52
  53         return smb2_composite_unlink(tree, &io);
  54 }
  55
  56
  57 /*
  58   rmdir with SMB2
  59 */
  60 NTSTATUS smb2_util_rmdir(struct smb2_tree *tree, const char *dname)
  61 {
  62         struct smb_rmdir io;
  63
  64         ZERO_STRUCT(io);
  65         io.in.path = dname;
  66
  67         return smb2_composite_rmdir(tree, &io);
  68 }
  69
  70
  71 /*
  72   mkdir with SMB2
  73 */
  74 NTSTATUS smb2_util_mkdir(struct smb2_tree *tree, const char *dname)
  75 {
  76         union smb_mkdir io;
  77
  78         ZERO_STRUCT(io);
  79         io.mkdir.level = RAW_MKDIR_MKDIR;
  80         io.mkdir.in.path = dname;
  81
  82         return smb2_composite_mkdir(tree, &io);
  83 }
  84
  85
  86 /*
  87   set file attribute with SMB2
  88 */
  89 NTSTATUS smb2_util_setatr(struct smb2_tree *tree, const char *name, uint32_t attrib)
  90 {
  91         union smb_setfileinfo io;
  92
  93         ZERO_STRUCT(io);
  94         io.basic_info.level = RAW_SFILEINFO_BASIC_INFORMATION;
  95         io.basic_info.in.file.path = name;
  96         io.basic_info.in.attrib = attrib;
  97
  98         return smb2_composite_setpathinfo(tree, &io);
  99 }
 100
 101
 102
 103
 104 /*
 105    recursively descend a tree deleting all files
 106    returns the number of files deleted, or -1 on error
 107 */
 108 int smb2_deltree(struct smb2_tree *tree, const char *dname)
 109 {
 110         NTSTATUS status;
 111         uint32_t total_deleted = 0;
 112         unsigned int count, i;
 113         union smb_search_data *list;
 114         TALLOC_CTX *tmp_ctx = talloc_new(tree);
 115         struct smb2_find f;
 116         struct smb2_create create_parm;
 117         bool did_delete;
 118
 119         /* it might be a file */
 120         status = smb2_util_unlink(tree, dname);
 121         if (NT_STATUS_IS_OK(status)) {
 122                 talloc_free(tmp_ctx);
 123                 return 1;
 124         }
 125         if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) ||
 126             NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_PATH_NOT_FOUND) ||
 127             NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_FILE)) {
 128                 talloc_free(tmp_ctx);
 129                 return 0;
 130         }
 131
 132         if (NT_STATUS_EQUAL(status, NT_STATUS_CANNOT_DELETE)) {
 133                 /* it could be read-only */
 134                 status = smb2_util_setatr(tree, dname, FILE_ATTRIBUTE_NORMAL);
 135                 status = smb2_util_unlink(tree, dname);
 136         }
 137         if (NT_STATUS_IS_OK(status)) {
 138                 talloc_free(tmp_ctx);
 139                 return 1;
 140         }
 141
 142         ZERO_STRUCT(create_parm);
 143         create_parm.in.desired_access = SEC_FILE_READ_DATA;
 144         create_parm.in.share_access =
 145                 NTCREATEX_SHARE_ACCESS_READ|
 146                 NTCREATEX_SHARE_ACCESS_WRITE;
 147         create_parm.in.create_options = NTCREATEX_OPTIONS_DIRECTORY;
 148         create_parm.in.create_disposition = NTCREATEX_DISP_OPEN;
 149         create_parm.in.fname = dname;
 150
 151         status = smb2_create(tree, tmp_ctx, &create_parm);
 152         if (NT_STATUS_IS_ERR(status)) {
 153                 DEBUG(2,("Failed to open %s - %s\n", dname, nt_errstr(status)));
 154                 talloc_free(tmp_ctx);
 155                 return -1;
 156         }
 157
 158
 159         do {
 160                 did_delete = false;
 161
 162                 ZERO_STRUCT(f);
 163                 f.in.file.handle       = create_parm.out.file.handle;
 164                 f.in.max_response_size = 0x10000;
 165                 f.in.level             = SMB2_FIND_NAME_INFO;
 166                 f.in.pattern           = "*";
 167
 168                 status = smb2_find_level(tree, tmp_ctx, &f, &count, &list);
 169                 if (NT_STATUS_IS_ERR(status)) {
 170                         DEBUG(2,("Failed to list %s - %s\n",
 171                                  dname, nt_errstr(status)));
 172                         smb2_util_close(tree, create_parm.out.file.handle);
 173                         talloc_free(tmp_ctx);
 174                         return -1;
 175                 }
 176
 177                 for (i=0;i<count;i++) {
 178                         char *name;
 179                         if (strcmp(".", list[i].name_info.name.s) == 0 ||
 180                             strcmp("..", list[i].name_info.name.s) == 0) {
 181                                 continue;
 182                         }
 183                         name = talloc_asprintf(tmp_ctx, "%s\\%s", dname, list[i].name_info.name.s);
 184                         status = smb2_util_unlink(tree, name);
 185                         if (NT_STATUS_EQUAL(status, NT_STATUS_CANNOT_DELETE)) {
 186                                 /* it could be read-only */
 187                                 status = smb2_util_setatr(tree, name, FILE_ATTRIBUTE_NORMAL);
 188                                 status = smb2_util_unlink(tree, name);
 189                         }
 190
 191                         if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
 192                                 int ret;
 193                                 ret = smb2_deltree(tree, name);
 194                                 if (ret > 0) total_deleted += ret;
 195                         }
 196                         talloc_free(name);
 197                         if (NT_STATUS_IS_OK(status)) {
 198                                 total_deleted++;
 199                                 did_delete = true;
 200                         }
 201                 }
 202         } while (did_delete);
 203
 204         smb2_util_close(tree, create_parm.out.file.handle);
 205
 206         status = smb2_util_rmdir(tree, dname);
 207         if (NT_STATUS_EQUAL(status, NT_STATUS_CANNOT_DELETE)) {
 208                 /* it could be read-only */
 209                 status = smb2_util_setatr(tree, dname, FILE_ATTRIBUTE_NORMAL);
 210                 status = smb2_util_rmdir(tree, dname);
 211         }
 212
 213         if (NT_STATUS_IS_ERR(status)) {
 214                 DEBUG(2,("Failed to delete %s - %s\n",
 215                          dname, nt_errstr(status)));
 216                 talloc_free(tmp_ctx);
 217                 return -1;
 218         }
 219
 220         talloc_free(tmp_ctx);
 221
 222         return total_deleted;
 223 }
 224
 225 /*
 226   check if two SMB2 file handles are the same
 227 */
 228 bool smb2_util_handle_equal(const struct smb2_handle h1,
 229                             const struct smb2_handle h2)
 230 {
 231         return (h1.data[0] == h2.data[0]) && (h1.data[1] == h2.data[1]);
 232 }
 233
 234 bool smb2_util_handle_empty(const struct smb2_handle h)
 235 {
 236         struct smb2_handle empty;
 237
 238         ZERO_STRUCT(empty);
 239
 240         return smb2_util_handle_equal(h, empty);
 241 }