source3/registry/reg_backend_perflib.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *  Copyright (C) Gerald Carter     2002-2005
   5  *  Copyright (C) Michael Adam      2008
   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 /*
  22  * perflib registry backend.
  23  *
  24  * This is a virtual overlay, dynamically presenting perflib values.
  25  */
  26
  27 #include "includes.h"
  28 #include "registry.h"
  29 #include "reg_util_internal.h"
  30 #include "reg_perfcount.h"
  31
  32 #undef DBGC_CLASS
  33 #define DBGC_CLASS DBGC_REGISTRY
  34
  35 extern struct registry_ops regdb_ops;
  36
  37 #define KEY_PERFLIB_NORM        "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB"
  38 #define KEY_PERFLIB_009_NORM    "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION/PERFLIB/009"
  39
  40 static int perflib_params(struct regval_ctr *regvals)
  41 {
  42         int base_index = -1;
  43         int last_counter = -1;
  44         int last_help = -1;
  45         int version = 0x00010001;
  46
  47         base_index = reg_perfcount_get_base_index();
  48         regval_ctr_addvalue(regvals, "Base Index", REG_DWORD, (uint8_t *)&base_index, sizeof(base_index));
  49         last_counter = reg_perfcount_get_last_counter(base_index);
  50         regval_ctr_addvalue(regvals, "Last Counter", REG_DWORD, (uint8_t *)&last_counter, sizeof(last_counter));
  51         last_help = reg_perfcount_get_last_help(last_counter);
  52         regval_ctr_addvalue(regvals, "Last Help", REG_DWORD, (uint8_t *)&last_help, sizeof(last_help));
  53         regval_ctr_addvalue(regvals, "Version", REG_DWORD, (uint8_t *)&version, sizeof(version));
  54
  55         return regval_ctr_numvals( regvals );
  56 }
  57
  58 static int perflib_009_params(struct regval_ctr *regvals)
  59 {
  60         int base_index;
  61         int buffer_size;
  62         char *buffer = NULL;
  63
  64         base_index = reg_perfcount_get_base_index();
  65         buffer_size = reg_perfcount_get_counter_names(base_index, &buffer);
  66         regval_ctr_addvalue(regvals, "Counter", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
  67         if(buffer_size > 0)
  68                 SAFE_FREE(buffer);
  69         buffer_size = reg_perfcount_get_counter_help(base_index, &buffer);
  70         regval_ctr_addvalue(regvals, "Help", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
  71         if(buffer_size > 0)
  72                 SAFE_FREE(buffer);
  73
  74         return regval_ctr_numvals( regvals );
  75 }
  76
  77 static int perflib_fetch_values(const char *key, struct regval_ctr *regvals)
  78 {
  79         char *path = NULL;
  80         TALLOC_CTX *ctx = talloc_tos();
  81
  82         path = talloc_strdup(ctx, key);
  83         if (path == NULL) {
  84                 return -1;
  85         }
  86         path = normalize_reg_path(ctx, path);
  87         if (path == NULL) {
  88                 return -1;
  89         }
  90
  91         if (strncmp(path, KEY_PERFLIB_NORM, strlen(path)) == 0) {
  92                 return perflib_params(regvals);
  93         } else if (strncmp(path, KEY_PERFLIB_009_NORM, strlen(path)) == 0) {
  94                 return perflib_009_params(regvals);
  95         } else {
  96                 return 0;
  97         }
  98 }
  99
 100 static int perflib_fetch_subkeys(const char *key,
 101                                  struct regsubkey_ctr *subkey_ctr)
 102 {
 103         return regdb_ops.fetch_subkeys(key, subkey_ctr);
 104 }
 105
 106 struct registry_ops perflib_reg_ops = {
 107         .fetch_values = perflib_fetch_values,
 108         .fetch_subkeys = perflib_fetch_subkeys,
 109 };