s3-talloc Change TALLOC_ZERO_P() to talloc_zero()
[nivanova/samba-autobuild/.git] / source3 / registry / reg_api.c
index 4ba5073cb0b3b5d30fc4c6e7d814182c6e082d9a..51bd98e9395becb5bd16804923e10031448356ee 100644 (file)
@@ -2,6 +2,7 @@
  *  Unix SMB/CIFS implementation.
  *  Virtual Windows Registry Layer
  *  Copyright (C) Volker Lendecke 2006
+ *  Copyright (C) Michael Adam 2007-2010
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
 
 /* Attempt to wrap the existing API in a more winreg.idl-like way */
 
+/*
+ * Here is a list of winreg.idl functions and corresponding implementations
+ * provided here:
+ *
+ * 0x00                winreg_OpenHKCR
+ * 0x01                winreg_OpenHKCU
+ * 0x02                winreg_OpenHKLM
+ * 0x03                winreg_OpenHKPD
+ * 0x04                winreg_OpenHKU
+ * 0x05                winreg_CloseKey
+ * 0x06                winreg_CreateKey                        reg_createkey
+ * 0x07                winreg_DeleteKey                        reg_deletekey
+ * 0x08                winreg_DeleteValue                      reg_deletevalue
+ * 0x09                winreg_EnumKey                          reg_enumkey
+ * 0x0a                winreg_EnumValue                        reg_enumvalue
+ * 0x0b                winreg_FlushKey
+ * 0x0c                winreg_GetKeySecurity                   reg_getkeysecurity
+ * 0x0d                winreg_LoadKey
+ * 0x0e                winreg_NotifyChangeKeyValue
+ * 0x0f                winreg_OpenKey                          reg_openkey
+ * 0x10                winreg_QueryInfoKey                     reg_queryinfokey
+ * 0x11                winreg_QueryValue                       reg_queryvalue
+ * 0x12                winreg_ReplaceKey
+ * 0x13                winreg_RestoreKey                       reg_restorekey
+ * 0x14                winreg_SaveKey                          reg_savekey
+ * 0x15                winreg_SetKeySecurity                   reg_setkeysecurity
+ * 0x16                winreg_SetValue                         reg_setvalue
+ * 0x17                winreg_UnLoadKey
+ * 0x18                winreg_InitiateSystemShutdown
+ * 0x19                winreg_AbortSystemShutdown
+ * 0x1a                winreg_GetVersion                       reg_getversion
+ * 0x1b                winreg_OpenHKCC
+ * 0x1c                winreg_OpenHKDD
+ * 0x1d                winreg_QueryMultipleValues              reg_querymultiplevalues
+ * 0x1e                winreg_InitiateSystemShutdownEx
+ * 0x1f                winreg_SaveKeyEx
+ * 0x20                winreg_OpenHKPT
+ * 0x21                winreg_OpenHKPN
+ * 0x22                winreg_QueryMultipleValues2             reg_querymultiplevalues
+ *
+ */
+
 #include "includes.h"
+#include "registry.h"
+#include "reg_api.h"
+#include "reg_cachehook.h"
+#include "reg_backend_db.h"
+#include "reg_dispatcher.h"
+#include "reg_objects.h"
+#include "../librpc/gen_ndr/ndr_security.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_REGISTRY
 
 static WERROR fill_value_cache(struct registry_key *key)
 {
+       WERROR werr;
+
        if (key->values != NULL) {
                if (!reg_values_need_update(key->key, key->values)) {
                        return WERR_OK;
                }
        }
 
-       if (!(key->values = TALLOC_ZERO_P(key, REGVAL_CTR))) {
-               return WERR_NOMEM;
-       }
+       werr = regval_ctr_init(key, &(key->values));
+       W_ERROR_NOT_OK_RETURN(werr);
+
        if (fetch_reg_values(key->key, key->values) == -1) {
                TALLOC_FREE(key->values);
                return WERR_BADFILE;
@@ -50,15 +102,16 @@ static WERROR fill_value_cache(struct registry_key *key)
 
 static WERROR fill_subkey_cache(struct registry_key *key)
 {
+       WERROR werr;
+
        if (key->subkeys != NULL) {
                if (!reg_subkeys_need_update(key->key, key->subkeys)) {
                        return WERR_OK;
                }
        }
 
-       if (!(key->subkeys = TALLOC_ZERO_P(key, REGSUBKEY_CTR))) {
-               return WERR_NOMEM;
-       }
+       werr = regsubkey_ctr_init(key, &(key->subkeys));
+       W_ERROR_NOT_OK_RETURN(werr);
 
        if (fetch_reg_keys(key->key, key->subkeys) == -1) {
                TALLOC_FREE(key->subkeys);
@@ -68,7 +121,7 @@ static WERROR fill_subkey_cache(struct registry_key *key)
        return WERR_OK;
 }
 
-static int regkey_destructor(REGISTRY_KEY *key)
+static int regkey_destructor(struct registry_key_handle *key)
 {
        return regdb_close();
 }
@@ -76,22 +129,23 @@ static int regkey_destructor(REGISTRY_KEY *key)
 static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx, 
                                   struct registry_key *parent,
                                   const char *name,
-                                  const struct nt_user_token *token,
+                                  const struct security_token *token,
                                   uint32 access_desired,
                                   struct registry_key **pregkey)
 {
        WERROR          result = WERR_OK;
        struct registry_key *regkey;
-       REGISTRY_KEY *key;
-       REGSUBKEY_CTR   *subkeys = NULL;
+       struct registry_key_handle *key;
+       struct regsubkey_ctr    *subkeys = NULL;
 
        DEBUG(7,("regkey_open_onelevel: name = [%s]\n", name));
 
        SMB_ASSERT(strchr(name, '\\') == NULL);
 
-       if (!(regkey = TALLOC_ZERO_P(mem_ctx, struct registry_key)) ||
+       if (!(regkey = talloc_zero(mem_ctx, struct registry_key)) ||
            !(regkey->token = dup_nt_token(regkey, token)) ||
-           !(regkey->key = TALLOC_ZERO_P(regkey, REGISTRY_KEY))) {
+           !(regkey->key = talloc_zero(regkey, struct registry_key_handle)))
+       {
                result = WERR_NOMEM;
                goto done;
        }
@@ -102,9 +156,9 @@ static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
 
        key = regkey->key;
        talloc_set_destructor(key, regkey_destructor);
-               
+
        /* initialization */
-       
+
        key->type = REG_KEY_GENERIC;
 
        if (name[0] == '\0') {
@@ -134,14 +188,14 @@ static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
 
        /* Tag this as a Performance Counter Key */
 
-       if( StrnCaseCmp(key->name, KEY_HKPD, strlen(KEY_HKPD)) == 0 )
+       if( strncasecmp_m(key->name, KEY_HKPD, strlen(KEY_HKPD)) == 0 )
                key->type = REG_KEY_HKPD;
-       
+
        /* Look up the table of registry I/O operations */
 
-       if ( !(key->hook = reghook_cache_find( key->name )) ) {
-               DEBUG(0,("reg_open_onelevel: Failed to assigned a "
-                        "REGISTRY_HOOK to [%s]\n", key->name ));
+       if ( !(key->ops = reghook_cache_find( key->name )) ) {
+               DEBUG(0,("reg_open_onelevel: Failed to assign "
+                        "registry_ops to [%s]\n", key->name ));
                result = WERR_BADFILE;
                goto done;
        }
@@ -149,8 +203,8 @@ static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
        /* check if the path really exists; failed is indicated by -1 */
        /* if the subkey count failed, bail out */
 
-       if ( !(subkeys = TALLOC_ZERO_P( key, REGSUBKEY_CTR )) ) {
-               result = WERR_NOMEM;
+       result = regsubkey_ctr_init(key, &subkeys);
+       if (!W_ERROR_IS_OK(result)) {
                goto done;
        }
 
@@ -169,7 +223,7 @@ static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
 
        *pregkey = regkey;
        result = WERR_OK;
-       
+
 done:
        if ( !W_ERROR_IS_OK(result) ) {
                TALLOC_FREE(regkey);
@@ -180,7 +234,7 @@ done:
 
 WERROR reg_openhive(TALLOC_CTX *mem_ctx, const char *hive,
                    uint32 desired_access,
-                   const struct nt_user_token *token,
+                   const struct security_token *token,
                    struct registry_key **pkey)
 {
        SMB_ASSERT(hive != NULL);
@@ -227,7 +281,7 @@ WERROR reg_openkey(TALLOC_CTX *mem_ctx, struct registry_key *parent,
 
                err = regkey_open_onelevel(mem_ctx, direct_parent,
                                           name_component, parent->token,
-                                          SEC_RIGHTS_ENUM_SUBKEYS, &tmp);
+                                          KEY_ENUMERATE_SUB_KEYS, &tmp);
                SAFE_FREE(name_component);
 
                if (!W_ERROR_IS_OK(err)) {
@@ -256,7 +310,7 @@ WERROR reg_enumkey(TALLOC_CTX *mem_ctx, struct registry_key *key,
 {
        WERROR err;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_ENUM_SUBKEYS)) {
+       if (!(key->key->access_granted & KEY_ENUMERATE_SUB_KEYS)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -264,11 +318,13 @@ WERROR reg_enumkey(TALLOC_CTX *mem_ctx, struct registry_key *key,
                return err;
        }
 
-       if (idx >= key->subkeys->num_subkeys) {
+       if (idx >= regsubkey_ctr_numkeys(key->subkeys)) {
                return WERR_NO_MORE_ITEMS;
        }
 
-       if (!(*name = talloc_strdup(mem_ctx, key->subkeys->subkeys[idx]))) {
+       if (!(*name = talloc_strdup(mem_ctx,
+                       regsubkey_ctr_specific_key(key->subkeys, idx))))
+       {
                return WERR_NOMEM;
        }
 
@@ -283,9 +339,10 @@ WERROR reg_enumvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
                     uint32 idx, char **pname, struct registry_value **pval)
 {
        struct registry_value *val;
+       struct regval_blob *blob;
        WERROR err;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
+       if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -293,23 +350,24 @@ WERROR reg_enumvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
                return err;
        }
 
-       if (idx >= key->values->num_values) {
+       if (idx >= regval_ctr_numvals(key->values)) {
                return WERR_NO_MORE_ITEMS;
        }
 
-       err = registry_pull_value(mem_ctx, &val,
-                                 key->values->values[idx]->type,
-                                 key->values->values[idx]->data_p,
-                                 key->values->values[idx]->size,
-                                 key->values->values[idx]->size);
-       if (!W_ERROR_IS_OK(err)) {
-               return err;
+       blob = regval_ctr_specific_value(key->values, idx);
+
+       val = talloc_zero(mem_ctx, struct registry_value);
+       if (val == NULL) {
+               return WERR_NOMEM;
        }
 
+       val->type = regval_type(blob);
+       val->data = data_blob_talloc(mem_ctx, regval_data_p(blob), regval_size(blob));
+
        if (pname
            && !(*pname = talloc_strdup(
-                        mem_ctx, key->values->values[idx]->valuename))) {
-               SAFE_FREE(val);
+                        mem_ctx, regval_name(blob)))) {
+               TALLOC_FREE(val);
                return WERR_NOMEM;
        }
 
@@ -323,7 +381,7 @@ WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
        WERROR err;
        uint32 i;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
+       if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -331,8 +389,10 @@ WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
                return err;
        }
 
-       for (i=0; i<key->values->num_values; i++) {
-               if (strequal(key->values->values[i]->valuename, name)) {
+       for (i=0; i < regval_ctr_numvals(key->values); i++) {
+               struct regval_blob *blob;
+               blob = regval_ctr_specific_value(key->values, i);
+               if (strequal(regval_name(blob), name)) {
                        return reg_enumvalue(mem_ctx, key, i, NULL, pval);
                }
        }
@@ -340,6 +400,56 @@ WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
        return WERR_BADFILE;
 }
 
+WERROR reg_querymultiplevalues(TALLOC_CTX *mem_ctx,
+                              struct registry_key *key,
+                              uint32_t num_names,
+                              const char **names,
+                              uint32_t *pnum_vals,
+                              struct registry_value **pvals)
+{
+       WERROR err;
+       uint32_t i, n, found = 0;
+       struct registry_value *vals;
+
+       if (num_names == 0) {
+               return WERR_OK;
+       }
+
+       if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+               return WERR_ACCESS_DENIED;
+       }
+
+       if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
+               return err;
+       }
+
+       vals = talloc_zero_array(mem_ctx, struct registry_value, num_names);
+       if (vals == NULL) {
+               return WERR_NOMEM;
+       }
+
+       for (n=0; n < num_names; n++) {
+               for (i=0; i < regval_ctr_numvals(key->values); i++) {
+                       struct regval_blob *blob;
+                       blob = regval_ctr_specific_value(key->values, i);
+                       if (strequal(regval_name(blob), names[n])) {
+                               struct registry_value *v;
+                               err = reg_enumvalue(mem_ctx, key, i, NULL, &v);
+                               if (!W_ERROR_IS_OK(err)) {
+                                       return err;
+                               }
+                               vals[n] = *v;
+                               found++;
+                       }
+               }
+       }
+
+       *pvals = vals;
+       *pnum_vals = found;
+
+       return WERR_OK;
+}
+
 WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
                        uint32_t *max_subkeylen, uint32_t *max_subkeysize, 
                        uint32_t *num_values, uint32_t *max_valnamelen, 
@@ -352,7 +462,7 @@ WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
        WERROR err;
        struct security_descriptor *secdesc;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
+       if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -362,23 +472,25 @@ WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
        }
 
        max_len = 0;
-       for (i=0; i<key->subkeys->num_subkeys; i++) {
-               max_len = MAX(max_len, strlen(key->subkeys->subkeys[i]));
+       for (i=0; i< regsubkey_ctr_numkeys(key->subkeys); i++) {
+               max_len = MAX(max_len,
+                       strlen(regsubkey_ctr_specific_key(key->subkeys, i)));
        }
 
-       *num_subkeys = key->subkeys->num_subkeys;
+       *num_subkeys = regsubkey_ctr_numkeys(key->subkeys);
        *max_subkeylen = max_len;
        *max_subkeysize = 0;    /* Class length? */
 
        max_len = 0;
        max_size = 0;
-       for (i=0; i<key->values->num_values; i++) {
-               max_len = MAX(max_len,
-                             strlen(key->values->values[i]->valuename));
-               max_size = MAX(max_size, key->values->values[i]->size);
+       for (i=0; i < regval_ctr_numvals(key->values); i++) {
+               struct regval_blob *blob;
+               blob = regval_ctr_specific_value(key->values, i);
+               max_len = MAX(max_len, strlen(regval_name(blob)));
+               max_size = MAX(max_size, regval_size(blob));
        }
 
-       *num_values = key->values->num_values;
+       *num_values = regval_ctr_numvals(key->values);
        *max_valnamelen = max_len;
        *max_valbufsize = max_size;
 
@@ -410,7 +522,6 @@ WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
        TALLOC_CTX *mem_ctx;
        char *path, *end;
        WERROR err;
-       REGSUBKEY_CTR *subkeys;
 
        if (!(mem_ctx = talloc_new(ctx))) return WERR_NOMEM;
 
@@ -426,7 +537,7 @@ WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
                *end = '\0';
 
                err = reg_createkey(mem_ctx, key, path,
-                                   SEC_RIGHTS_ENUM_SUBKEYS, &tmp, &action);
+                                   KEY_ENUMERATE_SUB_KEYS, &tmp, &action);
                if (!W_ERROR_IS_OK(err)) {
                        goto done;
                }
@@ -464,7 +575,7 @@ WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
         * with ENUM_SUBKEY access.
         */
 
-       err = reg_openkey(mem_ctx, key, "", SEC_RIGHTS_CREATE_SUBKEY,
+       err = reg_openkey(mem_ctx, key, "", KEY_CREATE_SUB_KEY,
                          &create_parent);
        if (!W_ERROR_IS_OK(err)) {
                goto done;
@@ -474,22 +585,11 @@ WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
         * Actually create the subkey
         */
 
-       if (!(subkeys = TALLOC_ZERO_P(mem_ctx, REGSUBKEY_CTR))) {
-               err = WERR_NOMEM;
-               goto done;
-       }
-
        err = fill_subkey_cache(create_parent);
        if (!W_ERROR_IS_OK(err)) goto done;
 
-       err = regsubkey_ctr_addkey(create_parent->subkeys, path);
-       if (!W_ERROR_IS_OK(err)) goto done;
-
-       if (!store_reg_keys(create_parent->key, create_parent->subkeys)) {
-               TALLOC_FREE(create_parent->subkeys);
-               err = WERR_REG_IO_FAILURE;
-               goto done;
-       }
+       err = create_reg_subkey(key->key, path);
+       W_ERROR_NOT_OK_GOTO_DONE(err);
 
        /*
         * Now open the newly created key
@@ -508,40 +608,36 @@ WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
 WERROR reg_deletekey(struct registry_key *parent, const char *path)
 {
        WERROR err;
-       TALLOC_CTX *mem_ctx;
        char *name, *end;
-       int num_subkeys;
        struct registry_key *tmp_key, *key;
+       TALLOC_CTX *mem_ctx = talloc_stackframe();
 
-       if (!(mem_ctx = talloc_init("reg_createkey"))) return WERR_NOMEM;
-
-       if (!(name = talloc_strdup(mem_ctx, path))) {
+       name = talloc_strdup(mem_ctx, path);
+       if (name == NULL) {
                err = WERR_NOMEM;
-               goto error;
+               goto done;
        }
 
        /* check if the key has subkeys */
        err = reg_openkey(mem_ctx, parent, name, REG_KEY_READ, &key);
-       if (!W_ERROR_IS_OK(err)) {
-               goto error;
-       }
-       if (!W_ERROR_IS_OK(err = fill_subkey_cache(key))) {
-               goto error;
-       }
-       if (key->subkeys->num_subkeys > 0) {
+       W_ERROR_NOT_OK_GOTO_DONE(err);
+
+       err = fill_subkey_cache(key);
+       W_ERROR_NOT_OK_GOTO_DONE(err);
+
+       if (regsubkey_ctr_numkeys(key->subkeys) > 0) {
                err = WERR_ACCESS_DENIED;
-               goto error;
+               goto done;
        }
 
        /* no subkeys - proceed with delete */
-       if ((end = strrchr(name, '\\')) != NULL) {
+       end = strrchr(name, '\\');
+       if (end != NULL) {
                *end = '\0';
 
                err = reg_openkey(mem_ctx, parent, name,
-                                 SEC_RIGHTS_CREATE_SUBKEY, &tmp_key);
-               if (!W_ERROR_IS_OK(err)) {
-                       goto error;
-               }
+                                 KEY_CREATE_SUB_KEY, &tmp_key);
+               W_ERROR_NOT_OK_GOTO_DONE(err);
 
                parent = tmp_key;
                name = end+1;
@@ -549,31 +645,12 @@ WERROR reg_deletekey(struct registry_key *parent, const char *path)
 
        if (name[0] == '\0') {
                err = WERR_INVALID_PARAM;
-               goto error;
-       }
-
-       if (!W_ERROR_IS_OK(err = fill_subkey_cache(parent))) {
-               goto error;
-       }
-
-       num_subkeys = parent->subkeys->num_subkeys;
-
-       if (regsubkey_ctr_delkey(parent->subkeys, name) == num_subkeys) {
-               err = WERR_BADFILE;
-               goto error;
-       }
-
-       if (!store_reg_keys(parent->key, parent->subkeys)) {
-               TALLOC_FREE(parent->subkeys);
-               err = WERR_REG_IO_FAILURE;
-               goto error;
+               goto done;
        }
 
-       regkey_set_secdesc(key->key, NULL);
+       err = delete_reg_subkey(parent->key, name);
 
-       err = WERR_OK;
-
- error:
+done:
        TALLOC_FREE(mem_ctx);
        return err;
 }
@@ -581,11 +658,11 @@ WERROR reg_deletekey(struct registry_key *parent, const char *path)
 WERROR reg_setvalue(struct registry_key *key, const char *name,
                    const struct registry_value *val)
 {
+       struct regval_blob *existing;
        WERROR err;
-       DATA_BLOB value_data;
        int res;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
+       if (!(key->key->access_granted & KEY_SET_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -593,14 +670,17 @@ WERROR reg_setvalue(struct registry_key *key, const char *name,
                return err;
        }
 
-       err = registry_push_value(key, val, &value_data);
-       if (!W_ERROR_IS_OK(err)) {
-               return err;
+       existing = regval_ctr_getvalue(key->values, name);
+
+       if ((existing != NULL) &&
+           (regval_size(existing) == val->data.length) &&
+           (memcmp(regval_data_p(existing), val->data.data,
+                   val->data.length) == 0)) {
+               return WERR_OK;
        }
 
        res = regval_ctr_addvalue(key->values, name, val->type,
-                                 (char *)value_data.data, value_data.length);
-       TALLOC_FREE(value_data.data);
+                                 val->data.data, val->data.length);
 
        if (res == 0) {
                TALLOC_FREE(key->values);
@@ -615,11 +695,24 @@ WERROR reg_setvalue(struct registry_key *key, const char *name,
        return WERR_OK;
 }
 
+static WERROR reg_value_exists(struct registry_key *key, const char *name)
+{
+       struct regval_blob *blob;
+
+       blob = regval_ctr_getvalue(key->values, name);
+
+       if (blob == NULL) {
+               return WERR_BADFILE;
+       } else {
+               return WERR_OK;
+       }
+}
+
 WERROR reg_deletevalue(struct registry_key *key, const char *name)
 {
        WERROR err;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
+       if (!(key->key->access_granted & KEY_SET_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -627,6 +720,11 @@ WERROR reg_deletevalue(struct registry_key *key, const char *name)
                return err;
        }
 
+       err = reg_value_exists(key, name);
+       if (!W_ERROR_IS_OK(err)) {
+               return err;
+       }
+
        regval_ctr_delvalue(key->values, name);
 
        if (!store_reg_values(key->key, key->values)) {
@@ -649,6 +747,16 @@ WERROR reg_setkeysecurity(struct registry_key *key,
        return regkey_set_secdesc(key->key, psecdesc);
 }
 
+WERROR reg_getversion(uint32_t *version)
+{
+       if (version == NULL) {
+               return WERR_INVALID_PARAM;
+       }
+
+       *version = 0x00000005; /* Windows 2000 registry API version */
+       return WERR_OK;
+}
+
 /**********************************************************************
  * Higher level utility functions
  **********************************************************************/
@@ -658,7 +766,7 @@ WERROR reg_deleteallvalues(struct registry_key *key)
        WERROR err;
        int i;
 
-       if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
+       if (!(key->key->access_granted & KEY_SET_VALUE)) {
                return WERR_ACCESS_DENIED;
        }
 
@@ -666,8 +774,10 @@ WERROR reg_deleteallvalues(struct registry_key *key)
                return err;
        }
 
-       for (i=0; i<key->values->num_values; i++) {
-               regval_ctr_delvalue(key->values, key->values->values[i]->valuename);
+       for (i=0; i < regval_ctr_numvals(key->values); i++) {
+               struct regval_blob *blob;
+               blob = regval_ctr_specific_value(key->values, i);
+               regval_ctr_delvalue(key->values, regval_name(blob));
        }
 
        if (!store_reg_values(key->key, key->values)) {
@@ -678,84 +788,20 @@ WERROR reg_deleteallvalues(struct registry_key *key)
        return WERR_OK;
 }
 
-/*
- * Utility function to open a complete registry path including the hive
- * prefix. This should become the replacement function for
- * regkey_open_internal.
- */
-
-WERROR reg_open_path(TALLOC_CTX *mem_ctx, const char *orig_path,
-                    uint32 desired_access, const struct nt_user_token *token,
-                    struct registry_key **pkey)
-{
-       struct registry_key *hive, *key;
-       char *path, *p;
-       WERROR err;
-
-       if (!(path = SMB_STRDUP(orig_path))) {
-               return WERR_NOMEM;
-       }
-
-       p = strchr(path, '\\');
-
-       if ((p == NULL) || (p[1] == '\0')) {
-               /*
-                * No key behind the hive, just return the hive
-                */
-
-               err = reg_openhive(mem_ctx, path, desired_access, token,
-                                  &hive);
-               if (!W_ERROR_IS_OK(err)) {
-                       SAFE_FREE(path);
-                       return err;
-               }
-               SAFE_FREE(path);
-               *pkey = hive;
-               return WERR_OK;
-       }
-
-       *p = '\0';
-
-       err = reg_openhive(mem_ctx, path, SEC_RIGHTS_ENUM_SUBKEYS, token,
-                          &hive);
-       if (!W_ERROR_IS_OK(err)) {
-               SAFE_FREE(path);
-               return err;
-       }
-
-       err = reg_openkey(mem_ctx, hive, p+1, desired_access, &key);
-
-       TALLOC_FREE(hive);
-       SAFE_FREE(path);
-
-       if (!W_ERROR_IS_OK(err)) {
-               return err;
-       }
-
-       *pkey = key;
-       return WERR_OK;
-}
-
 /*
  * Utility function to delete a registry key with all its subkeys.
  * Note that reg_deletekey returns ACCESS_DENIED when called on a
  * key that has subkeys.
  */
-static WERROR reg_deletekey_recursive_internal(TALLOC_CTX *ctx,
-                                              struct registry_key *parent,
+static WERROR reg_deletekey_recursive_internal(struct registry_key *parent,
                                               const char *path,
                                               bool del_key)
 {
-       TALLOC_CTX *mem_ctx = NULL;
        WERROR werr = WERR_OK;
        struct registry_key *key;
        char *subkey_name = NULL;
-
-       mem_ctx = talloc_new(ctx);
-       if (mem_ctx == NULL) {
-               werr = WERR_NOMEM;
-               goto done;
-       }
+       uint32 i;
+       TALLOC_CTX *mem_ctx = talloc_stackframe();
 
        /* recurse through subkeys first */
        werr = reg_openkey(mem_ctx, parent, path, REG_KEY_ALL, &key);
@@ -763,24 +809,18 @@ static WERROR reg_deletekey_recursive_internal(TALLOC_CTX *ctx,
                goto done;
        }
 
-       while (W_ERROR_IS_OK(werr = reg_enumkey(mem_ctx, key, 0,
-                                               &subkey_name, NULL)))
-       {
-               werr = reg_deletekey_recursive_internal(mem_ctx, key,
-                                                       subkey_name,
-                                                       true);
-               if (!W_ERROR_IS_OK(werr)) {
-                       goto done;
-               }
-       }
-       if (!W_ERROR_EQUAL(WERR_NO_MORE_ITEMS, werr)) {
-               DEBUG(1, ("reg_deletekey_recursive_internal: "
-                         "Error enumerating subkeys: %s\n",
-                         dos_errstr(werr)));
-               goto done;
-       }
+       werr = fill_subkey_cache(key);
+       W_ERROR_NOT_OK_GOTO_DONE(werr);
 
-       werr = WERR_OK;
+       /*
+        * loop from top to bottom for perfomance:
+        * this way, we need to rehash the regsubkey containers less
+        */
+       for (i = regsubkey_ctr_numkeys(key->subkeys) ; i > 0; i--) {
+               subkey_name = regsubkey_ctr_specific_key(key->subkeys, i-1);
+               werr = reg_deletekey_recursive_internal(key, subkey_name, true);
+               W_ERROR_NOT_OK_GOTO_DONE(werr);
+       }
 
        if (del_key) {
                /* now delete the actual key */
@@ -792,115 +832,60 @@ done:
        return werr;
 }
 
-WERROR reg_deletekey_recursive(TALLOC_CTX *ctx,
-                              struct registry_key *parent,
-                              const char *path)
+static WERROR reg_deletekey_recursive_trans(struct registry_key *parent,
+                                           const char *path,
+                                           bool del_key)
 {
-       return reg_deletekey_recursive_internal(ctx, parent, path, true);
-}
+       WERROR werr;
 
-WERROR reg_deletesubkeys_recursive(TALLOC_CTX *ctx,
-                                  struct registry_key *parent,
-                                  const char *path)
-{
-       return reg_deletekey_recursive_internal(ctx, parent, path, false);
-}
-
-#if 0
-/* these two functions are unused. */
-
-/**
- * Utility function to create a registry key without opening the hive
- * before. Assumes the hive already exists.
- */
-
-WERROR reg_create_path(TALLOC_CTX *mem_ctx, const char *orig_path,
-                      uint32 desired_access,
-                      const struct nt_user_token *token,
-                      enum winreg_CreateAction *paction,
-                      struct registry_key **pkey)
-{
-       struct registry_key *hive;
-       char *path, *p;
-       WERROR err;
-
-       if (!(path = SMB_STRDUP(orig_path))) {
-               return WERR_NOMEM;
+       werr = regdb_transaction_start();
+       if (!W_ERROR_IS_OK(werr)) {
+               DEBUG(0, ("reg_deletekey_recursive_trans: "
+                         "error starting transaction: %s\n",
+                         win_errstr(werr)));
+               return werr;
        }
 
-       p = strchr(path, '\\');
+       werr = reg_deletekey_recursive_internal(parent, path, del_key);
 
-       if ((p == NULL) || (p[1] == '\0')) {
-               /*
-                * No key behind the hive, just return the hive
-                */
-
-               err = reg_openhive(mem_ctx, path, desired_access, token,
-                                  &hive);
-               if (!W_ERROR_IS_OK(err)) {
-                       SAFE_FREE(path);
-                       return err;
+       if (!W_ERROR_IS_OK(werr)) {
+               WERROR werr2;
+
+               DEBUG(1, (__location__ " failed to delete key '%s' from key "
+                         "'%s': %s\n", path, parent->key->name,
+                         win_errstr(werr)));
+
+               werr2 = regdb_transaction_cancel();
+               if (!W_ERROR_IS_OK(werr2)) {
+                       DEBUG(0, ("reg_deletekey_recursive_trans: "
+                                 "error cancelling transaction: %s\n",
+                                 win_errstr(werr2)));
+                       /*
+                        * return the original werr or the
+                        * error from cancelling the transaction?
+                        */
+               }
+       } else {
+               werr = regdb_transaction_commit();
+               if (!W_ERROR_IS_OK(werr)) {
+                       DEBUG(0, ("reg_deletekey_recursive_trans: "
+                                 "error committing transaction: %s\n",
+                                 win_errstr(werr)));
                }
-               SAFE_FREE(path);
-               *pkey = hive;
-               *paction = REG_OPENED_EXISTING_KEY;
-               return WERR_OK;
-       }
-
-       *p = '\0';
-
-       err = reg_openhive(mem_ctx, path,
-                          (strchr(p+1, '\\') != NULL) ?
-                          SEC_RIGHTS_ENUM_SUBKEYS : SEC_RIGHTS_CREATE_SUBKEY,
-                          token, &hive);
-       if (!W_ERROR_IS_OK(err)) {
-               SAFE_FREE(path);
-               return err;
        }
 
-       err = reg_createkey(mem_ctx, hive, p+1, desired_access, pkey, paction);
-       SAFE_FREE(path);
-       TALLOC_FREE(hive);
-       return err;
+       return werr;
 }
 
-/*
- * Utility function to create a registry key without opening the hive
- * before. Will not delete a hive.
- */
-
-WERROR reg_delete_path(const struct nt_user_token *token,
-                      const char *orig_path)
+WERROR reg_deletekey_recursive(struct registry_key *parent,
+                              const char *path)
 {
-       struct registry_key *hive;
-       char *path, *p;
-       WERROR err;
-
-       if (!(path = SMB_STRDUP(orig_path))) {
-               return WERR_NOMEM;
-       }
-
-       p = strchr(path, '\\');
-
-       if ((p == NULL) || (p[1] == '\0')) {
-               SAFE_FREE(path);
-               return WERR_INVALID_PARAM;
-       }
-
-       *p = '\0';
-
-       err = reg_openhive(NULL, path,
-                          (strchr(p+1, '\\') != NULL) ?
-                          SEC_RIGHTS_ENUM_SUBKEYS : SEC_RIGHTS_CREATE_SUBKEY,
-                          token, &hive);
-       if (!W_ERROR_IS_OK(err)) {
-               SAFE_FREE(path);
-               return err;
-       }
+       return reg_deletekey_recursive_trans(parent, path, true);
+}
 
-       err = reg_deletekey(hive, p+1);
-       SAFE_FREE(path);
-       TALLOC_FREE(hive);
-       return err;
+WERROR reg_deletesubkeys_recursive(struct registry_key *parent,
+                                  const char *path)
+{
+       return reg_deletekey_recursive_trans(parent, path, false);
 }
-#endif /* #if 0 */
+