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 #include "reg_objects.h"
  32
  33 #undef DBGC_CLASS
  34 #define DBGC_CLASS DBGC_REGISTRY
  35
  36 extern struct registry_ops regdb_ops;
  37
  38 #define KEY_PERFLIB_NORM        "HKLM\\SOFTWARE\\MICROSOFT\\WINDOWS NT\\CURRENTVERSION\\PERFLIB"
  39 #define KEY_PERFLIB_009_NORM    "HKLM\\SOFTWARE\\MICROSOFT\\WINDOWS NT\\CURRENTVERSION\\PERFLIB\\009"
  40
  41 static int perflib_params(struct regval_ctr *regvals)
  42 {
  43         int base_index = -1;
  44         int last_counter = -1;
  45         int last_help = -1;
  46         int version = 0x00010001;
  47
  48         base_index = reg_perfcount_get_base_index();
  49         regval_ctr_addvalue(regvals, "Base Index", REG_DWORD, (uint8_t *)&base_index, sizeof(base_index));
  50         last_counter = reg_perfcount_get_last_counter(base_index);
  51         regval_ctr_addvalue(regvals, "Last Counter", REG_DWORD, (uint8_t *)&last_counter, sizeof(last_counter));
  52         last_help = reg_perfcount_get_last_help(last_counter);
  53         regval_ctr_addvalue(regvals, "Last Help", REG_DWORD, (uint8_t *)&last_help, sizeof(last_help));
  54         regval_ctr_addvalue(regvals, "Version", REG_DWORD, (uint8_t *)&version, sizeof(version));
  55
  56         return regval_ctr_numvals( regvals );
  57 }
  58
  59 static int perflib_009_params(struct regval_ctr *regvals)
  60 {
  61         int base_index;
  62         int buffer_size;
  63         char *buffer = NULL;
  64
  65         base_index = reg_perfcount_get_base_index();
  66         buffer_size = reg_perfcount_get_counter_names(base_index, &buffer);
  67         regval_ctr_addvalue(regvals, "Counter", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
  68         if(buffer_size > 0)
  69                 SAFE_FREE(buffer);
  70         buffer_size = reg_perfcount_get_counter_help(base_index, &buffer);
  71         regval_ctr_addvalue(regvals, "Help", REG_MULTI_SZ, (uint8_t *)buffer, buffer_size);
  72         if(buffer_size > 0)
  73                 SAFE_FREE(buffer);
  74
  75         return regval_ctr_numvals( regvals );
  76 }
  77
  78 static int perflib_fetch_values(const char *key, struct regval_ctr *regvals)
  79 {
  80         char *path = NULL;
  81         TALLOC_CTX *ctx = talloc_tos();
  82
  83         path = talloc_strdup(ctx, key);
  84         if (path == NULL) {
  85                 return -1;
  86         }
  87         path = normalize_reg_path(ctx, path);
  88         if (path == NULL) {
  89                 return -1;
  90         }
  91
  92         if (strncmp(path, KEY_PERFLIB_NORM, strlen(path)) == 0) {
  93                 return perflib_params(regvals);
  94         } else if (strncmp(path, KEY_PERFLIB_009_NORM, strlen(path)) == 0) {
  95                 return perflib_009_params(regvals);
  96         } else {
  97                 return 0;
  98         }
  99 }
 100
 101 static int perflib_fetch_subkeys(const char *key,
 102                                  struct regsubkey_ctr *subkey_ctr)
 103 {
 104         return regdb_ops.fetch_subkeys(key, subkey_ctr);
 105 }
 106
 107 struct registry_ops perflib_reg_ops = {
 108         .fetch_values = perflib_fetch_values,
 109         .fetch_subkeys = perflib_fetch_subkeys,
 110 };