source4/lib/registry/reg_backend_dir.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Registry interface
   4    Copyright (C) Jelmer Vernooij                                          2004.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "registry.h"
  22 #include "system/dir.h"
  23 #include "system/filesys.h"
  24
  25 static WERROR reg_dir_add_key(TALLOC_CTX *mem_ctx, const struct registry_key *parent, const char *name, uint32_t access_mask, struct security_descriptor *desc, struct registry_key **result)
  26 {
  27         char *path;
  28         int ret;
  29         asprintf(&path, "%s%s\\%s", parent->hive->location, parent->path, name);
  30         path = reg_path_win2unix(path);
  31         ret = mkdir(path, 0700);
  32         SAFE_FREE(path);
  33         if(ret == 0)return WERR_OK; /* FIXME */
  34         return WERR_INVALID_PARAM;
  35 }
  36
  37 static WERROR reg_dir_del_key(const struct registry_key *k, const char *name)
  38 {
  39         char *child = talloc_asprintf(NULL, "%s/%s", (char *)k->backend_data, name);
  40         WERROR ret;
  41
  42         if (rmdir(child) == 0) ret = WERR_OK; else ret = WERR_GENERAL_FAILURE;
  43
  44         talloc_free(child);
  45
  46         return ret;
  47 }
  48
  49 static WERROR reg_dir_open_key(TALLOC_CTX *mem_ctx, const struct registry_key *p, const char *name, struct registry_key **subkey)
  50 {
  51         DIR *d;
  52         char *fullpath, *unixpath;
  53         struct registry_key *ret;
  54
  55         if(!name) {
  56                 DEBUG(0, ("NULL pointer passed as directory name!"));
  57                 return WERR_INVALID_PARAM;
  58         }
  59
  60
  61         fullpath = talloc_asprintf(mem_ctx, "%s/%s", (char *)p->backend_data, name);
  62         unixpath = reg_path_win2unix(fullpath);
  63
  64         d = opendir(unixpath);
  65         if(!d) {
  66                 DEBUG(3,("Unable to open '%s': %s\n", unixpath, strerror(errno)));
  67                 return WERR_BADFILE;
  68         }
  69         closedir(d);
  70         ret = talloc(mem_ctx, struct registry_key);
  71         ret->hive = p->hive;
  72         ret->path = fullpath;
  73         ret->backend_data = unixpath;
  74         *subkey = ret;
  75         return WERR_OK;
  76 }
  77
  78 static WERROR reg_dir_key_by_index(TALLOC_CTX *mem_ctx, const struct registry_key *k, int idx, struct registry_key **key)
  79 {
  80         struct dirent *e;
  81         char *fullpath = k->backend_data;
  82         int i = 0;
  83         DIR *d;
  84
  85         d = opendir(fullpath);
  86
  87         if(!d) return WERR_INVALID_PARAM;
  88
  89         while((e = readdir(d))) {
  90                 if(!ISDOT(e->d_name) && !ISDOTDOT(e->d_name)) {
  91                         struct stat stbuf;
  92                         char *thispath;
  93
  94                         /* Check if file is a directory */
  95                         asprintf(&thispath, "%s/%s", fullpath, e->d_name);
  96                         stat(thispath, &stbuf);
  97
  98                         if(S_ISDIR(stbuf.st_mode)) {
  99                                 if(i == idx) {
 100                                         (*key) = talloc(mem_ctx, struct registry_key);
 101                                         (*key)->name = talloc_strdup(*key, e->d_name);
 102                                         (*key)->path = NULL;
 103                                         (*key)->backend_data = talloc_strdup(*key, thispath);
 104                                         SAFE_FREE(thispath);
 105                                         closedir(d);
 106                                         return WERR_OK;
 107                                 }
 108                                 i++;
 109                         }
 110
 111                         SAFE_FREE(thispath);
 112                 }
 113         }
 114
 115         closedir(d);
 116
 117         return WERR_NO_MORE_ITEMS;
 118 }
 119
 120 static WERROR reg_dir_open(struct registry_hive *h, struct registry_key **key)
 121 {
 122         if(!h->location) return WERR_INVALID_PARAM;
 123
 124         *key = talloc(h, struct registry_key);
 125         (*key)->backend_data = talloc_strdup(*key, h->location);
 126         return WERR_OK;
 127 }
 128
 129 static struct hive_operations reg_backend_dir = {
 130         .name = "dir",
 131         .open_hive = reg_dir_open,
 132         .open_key = reg_dir_open_key,
 133         .add_key = reg_dir_add_key,
 134         .del_key = reg_dir_del_key,
 135         .get_subkey_by_index = reg_dir_key_by_index
 136 };
 137
 138 NTSTATUS registry_dir_init(void)
 139 {
 140         return registry_register(&reg_backend_dir);
 141 }