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 2 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, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22 #include "registry.h"
  23 #include "system/dir.h"
  24 #include "system/filesys.h"
  25
  26 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)
  27 {
  28         char *path;
  29         int ret;
  30         asprintf(&path, "%s%s\\%s", parent->hive->location, parent->path, name);
  31         path = reg_path_win2unix(path);
  32         ret = mkdir(path, 0700);
  33         SAFE_FREE(path);
  34         if(ret == 0)return WERR_OK; /* FIXME */
  35         return WERR_INVALID_PARAM;
  36 }
  37
  38 static WERROR reg_dir_del_key(const struct registry_key *k, const char *name)
  39 {
  40         char *child = talloc_asprintf(NULL, "%s/%s", (char *)k->backend_data, name);
  41         WERROR ret;
  42
  43         if (rmdir(child) == 0) ret = WERR_OK; else ret = WERR_GENERAL_FAILURE;
  44
  45         talloc_free(child);
  46
  47         return ret;
  48 }
  49
  50 static WERROR reg_dir_open_key(TALLOC_CTX *mem_ctx, const struct registry_key *p, const char *name, struct registry_key **subkey)
  51 {
  52         DIR *d;
  53         char *fullpath, *unixpath;
  54         struct registry_key *ret;
  55
  56         if(!name) {
  57                 DEBUG(0, ("NULL pointer passed as directory name!"));
  58                 return WERR_INVALID_PARAM;
  59         }
  60
  61
  62         fullpath = talloc_asprintf(mem_ctx, "%s/%s", (char *)p->backend_data, name);
  63         unixpath = reg_path_win2unix(fullpath);
  64
  65         d = opendir(unixpath);
  66         if(!d) {
  67                 DEBUG(3,("Unable to open '%s': %s\n", unixpath, strerror(errno)));
  68                 return WERR_BADFILE;
  69         }
  70         closedir(d);
  71         ret = talloc(mem_ctx, struct registry_key);
  72         ret->hive = p->hive;
  73         ret->path = fullpath;
  74         ret->backend_data = unixpath;
  75         *subkey = ret;
  76         return WERR_OK;
  77 }
  78
  79 static WERROR reg_dir_key_by_index(TALLOC_CTX *mem_ctx, const struct registry_key *k, int idx, struct registry_key **key)
  80 {
  81         struct dirent *e;
  82         char *fullpath = k->backend_data;
  83         int i = 0;
  84         DIR *d;
  85
  86         d = opendir(fullpath);
  87
  88         if(!d) return WERR_INVALID_PARAM;
  89
  90         while((e = readdir(d))) {
  91                 if( strcmp(e->d_name, ".") &&
  92                    strcmp(e->d_name, "..")) {
  93                         struct stat stbuf;
  94                         char *thispath;
  95
  96                         /* Check if file is a directory */
  97                         asprintf(&thispath, "%s/%s", fullpath, e->d_name);
  98                         stat(thispath, &stbuf);
  99
 100                         if(S_ISDIR(stbuf.st_mode)) {
 101                                 if(i == idx) {
 102                                         (*key) = talloc(mem_ctx, struct registry_key);
 103                                         (*key)->name = e->d_name;
 104                                         (*key)->path = NULL;
 105                                         (*key)->backend_data = talloc_strdup(mem_ctx, thispath);
 106                                         SAFE_FREE(thispath);
 107                                         closedir(d);
 108                                         return WERR_OK;
 109                                 }
 110                                 i++;
 111                         }
 112
 113                         SAFE_FREE(thispath);
 114                 }
 115         }
 116
 117         closedir(d);
 118
 119         return WERR_NO_MORE_ITEMS;
 120 }
 121
 122 static WERROR reg_dir_open(struct registry_hive *h, struct registry_key **key)
 123 {
 124         if(!h->location) return WERR_INVALID_PARAM;
 125
 126         *key = talloc(h, struct registry_key);
 127         (*key)->backend_data = talloc_strdup(*key, h->location);
 128         return WERR_OK;
 129 }
 130
 131 static struct hive_operations reg_backend_dir = {
 132         .name = "dir",
 133         .open_hive = reg_dir_open,
 134         .open_key = reg_dir_open_key,
 135         .add_key = reg_dir_add_key,
 136         .del_key = reg_dir_del_key,
 137         .get_subkey_by_index = reg_dir_key_by_index
 138 };
 139
 140 NTSTATUS registry_dir_init(void)
 141 {
 142         return registry_register(&reg_backend_dir);
 143 }