diff options
Diffstat (limited to 'source3/registry/reg_backend_db.c')
| -rw-r--r-- | source3/registry/reg_backend_db.c | 952 |
1 files changed, 952 insertions, 0 deletions
diff --git a/source3/registry/reg_backend_db.c b/source3/registry/reg_backend_db.c new file mode 100644 index 0000000000..52e0fd4289 --- /dev/null +++ b/source3/registry/reg_backend_db.c @@ -0,0 +1,952 @@ +/* + * Unix SMB/CIFS implementation. + * Virtual Windows Registry Layer + * Copyright (C) Gerald Carter 2002-2005 + * + * 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 + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +/* Implementation of internal registry database functions. */ + +#include "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_REGISTRY + +static struct tdb_wrap *tdb_reg = NULL; +static int tdb_refcount; + +/* List the deepest path into the registry. All part components will be created.*/ + +/* If you want to have a part of the path controlled by the tdb and part by + a virtual registry db (e.g. printing), then you have to list the deepest path. + For example,"HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Print" + allows the reg_db backend to handle everything up to + "HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion" and then we'll hook + the reg_printing backend onto the last component of the path (see + KEY_PRINTING_2K in include/rpc_reg.h) --jerry */ + +static const char *builtin_registry_paths[] = { + KEY_PRINTING_2K, + KEY_PRINTING_PORTS, + KEY_PRINTING, + KEY_SHARES, + KEY_EVENTLOG, + KEY_SMBCONF, + KEY_PERFLIB, + KEY_PERFLIB_009, + "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors", + KEY_PROD_OPTIONS, + "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration", + KEY_TCPIP_PARAMS, + KEY_NETLOGON_PARAMS, + KEY_HKU, + KEY_HKCR, + KEY_HKPD, + KEY_HKPT, + NULL }; + +struct builtin_regkey_value { + const char *path; + const char *valuename; + uint32 type; + union { + const char *string; + uint32 dw_value; + } data; +}; + +static struct builtin_regkey_value builtin_registry_values[] = { + { KEY_PRINTING_PORTS, + SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } }, + { KEY_PRINTING_2K, + "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } }, + { KEY_EVENTLOG, + "DisplayName", REG_SZ, { "Event Log" } }, + { KEY_EVENTLOG, + "ErrorControl", REG_DWORD, { (char*)0x00000001 } }, + { NULL, NULL, 0, { NULL } } +}; + +/*********************************************************************** + Open the registry data in the tdb + ***********************************************************************/ + +static bool init_registry_data( void ) +{ + char *path = NULL; + char *base = NULL; + char *remaining = NULL; + TALLOC_CTX *frame = NULL; + char *keyname; + char *subkeyname; + REGSUBKEY_CTR *subkeys; + REGVAL_CTR *values; + int i; + const char *p, *p2; + UNISTR2 data; + + /* + * There are potentially quite a few store operations which are all + * indiviually wrapped in tdb transactions. Wrapping them in a single + * transaction gives just a single transaction_commit() to actually do + * its fsync()s. See tdb/common/transaction.c for info about nested + * transaction behaviour. + */ + + if ( tdb_transaction_start( tdb_reg->tdb ) == -1 ) { + DEBUG(0, ("init_registry_data: tdb_transaction_start " + "failed\n")); + return false; + } + + /* loop over all of the predefined paths and add each component */ + + for ( i=0; builtin_registry_paths[i] != NULL; i++ ) { + + frame = talloc_stackframe(); + + DEBUG(6,("init_registry_data: Adding [%s]\n", builtin_registry_paths[i])); + + path = talloc_strdup(talloc_tos(), builtin_registry_paths[i]); + base = talloc_strdup(talloc_tos(), ""); + if (!path || !base) { + goto fail; + } + p = path; + + while (next_token_talloc(talloc_tos(), &p, &keyname, "\\")) { + + /* build up the registry path from the components */ + + if (*base) { + base = talloc_asprintf(talloc_tos(), "%s\\", base); + if (!base) { + goto fail; + } + } + base = talloc_asprintf_append(base, "%s", keyname); + if (!base) { + goto fail; + } + + /* get the immediate subkeyname (if we have one ) */ + + subkeyname = talloc_strdup(talloc_tos(), ""); + if (!subkeyname) { + goto fail; + } + if (*p) { + remaining = talloc_strdup(talloc_tos(), p); + if (!remaining) { + goto fail; + } + p2 = remaining; + + if (!next_token_talloc(talloc_tos(), &p2, + &subkeyname, "\\")) { + subkeyname = talloc_strdup(talloc_tos(),p2); + if (!subkeyname) { + goto fail; + } + } + } + + DEBUG(10,("init_registry_data: Storing key [%s] with subkey [%s]\n", + base, *subkeyname ? subkeyname : "NULL")); + + /* we don't really care if the lookup succeeds or not since + we are about to update the record. We just want any + subkeys already present */ + + if ( !(subkeys = TALLOC_ZERO_P(talloc_tos(), REGSUBKEY_CTR )) ) { + DEBUG(0,("talloc() failure!\n")); + goto fail; + } + + regdb_fetch_keys(base, subkeys); + if (*subkeyname) { + regsubkey_ctr_addkey( subkeys, subkeyname); + } + if (!regdb_store_keys( base, subkeys)) { + goto fail; + } + } + + TALLOC_FREE(frame); + } + + /* loop over all of the predefined values and add each component */ + + for (i=0; builtin_registry_values[i].path != NULL; i++) { + + if (!(values = TALLOC_ZERO_P(talloc_tos(), REGVAL_CTR))) { + goto fail; + } + + regdb_fetch_values( builtin_registry_values[i].path, values); + + /* preserve existing values across restarts. Only add new ones */ + + if (!regval_ctr_key_exists(values, builtin_registry_values[i].valuename)) { + switch(builtin_registry_values[i].type) { + case REG_DWORD: + regval_ctr_addvalue( values, + builtin_registry_values[i].valuename, + REG_DWORD, + (char*)&builtin_registry_values[i].data.dw_value, + sizeof(uint32) ); + break; + + case REG_SZ: + init_unistr2( &data, builtin_registry_values[i].data.string, UNI_STR_TERMINATE); + regval_ctr_addvalue( values, + builtin_registry_values[i].valuename, + REG_SZ, + (char*)data.buffer, + data.uni_str_len*sizeof(uint16) ); + break; + + default: + DEBUG(0,("init_registry_data: invalid value type in builtin_registry_values [%d]\n", + builtin_registry_values[i].type)); + } + regdb_store_values( builtin_registry_values[i].path, values ); + } + TALLOC_FREE( values ); + } + + TALLOC_FREE(frame); + + if (tdb_transaction_commit( tdb_reg->tdb ) == -1) { + DEBUG(0, ("init_registry_data: Could not commit " + "transaction\n")); + return false; + } + + return true; + + fail: + + TALLOC_FREE(frame); + + if (tdb_transaction_cancel( tdb_reg->tdb ) == -1) { + smb_panic("init_registry_data: tdb_transaction_cancel " + "failed\n"); + } + + return false; +} + +/*********************************************************************** + Open the registry database + ***********************************************************************/ + +bool regdb_init( void ) +{ + const char *vstring = "INFO/version"; + uint32 vers_id; + + if ( tdb_reg ) { + DEBUG(10,("regdb_init: incrementing refcount (%d)\n", tdb_refcount)); + tdb_refcount++; + return true; + } + + if ( !(tdb_reg = tdb_wrap_open(NULL, state_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600)) ) + { + tdb_reg = tdb_wrap_open(NULL, state_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR|O_CREAT, 0600); + if ( !tdb_reg ) { + DEBUG(0,("regdb_init: Failed to open registry %s (%s)\n", + state_path("registry.tdb"), strerror(errno) )); + return false; + } + + DEBUG(10,("regdb_init: Successfully created registry tdb\n")); + } + + tdb_refcount = 1; + + vers_id = tdb_fetch_int32(tdb_reg->tdb, vstring); + + if ( vers_id != REGVER_V1 ) { + /* any upgrade code here if needed */ + DEBUG(10, ("regdb_init: got INFO/version = %d != %d\n", + vers_id, REGVER_V1)); + } + + /* always setup the necessary keys and values */ + + if ( !init_registry_data() ) { + DEBUG(0,("regdb_init: Failed to initialize data in registry!\n")); + return false; + } + + return true; +} + +/*********************************************************************** + Open the registry. Must already have been initialized by regdb_init() + ***********************************************************************/ + +WERROR regdb_open( void ) +{ + WERROR result = WERR_OK; + + if ( tdb_reg ) { + DEBUG(10,("regdb_open: incrementing refcount (%d)\n", tdb_refcount)); + tdb_refcount++; + return WERR_OK; + } + + become_root(); + + tdb_reg = tdb_wrap_open(NULL, state_path("registry.tdb"), 0, REG_TDB_FLAGS, O_RDWR, 0600); + if ( !tdb_reg ) { + result = ntstatus_to_werror( map_nt_error_from_unix( errno ) ); + DEBUG(0,("regdb_open: Failed to open %s! (%s)\n", + state_path("registry.tdb"), strerror(errno) )); + } + + unbecome_root(); + + tdb_refcount = 1; + DEBUG(10,("regdb_open: refcount reset (%d)\n", tdb_refcount)); + + return result; +} + +/*********************************************************************** + ***********************************************************************/ + +int regdb_close( void ) +{ + if (tdb_refcount == 0) { + return 0; + } + + tdb_refcount--; + + DEBUG(10,("regdb_close: decrementing refcount (%d)\n", tdb_refcount)); + + if ( tdb_refcount > 0 ) + return 0; + + SMB_ASSERT( tdb_refcount >= 0 ); + + TALLOC_FREE(tdb_reg); + return 0; +} + +/*********************************************************************** + return the tdb sequence number of the registry tdb. + this is an indicator for the content of the registry + having changed. it will change upon regdb_init, too, though. + ***********************************************************************/ +int regdb_get_seqnum(void) +{ + return tdb_get_seqnum(tdb_reg->tdb); +} + +/*********************************************************************** + Add subkey strings to the registry tdb under a defined key + fmt is the same format as tdb_pack except this function only supports + fstrings + ***********************************************************************/ + +static bool regdb_store_keys_internal(const char *key, REGSUBKEY_CTR *ctr) +{ + TDB_DATA dbuf; + uint8 *buffer = NULL; + int i = 0; + uint32 len, buflen; + bool ret = true; + uint32 num_subkeys = regsubkey_ctr_numkeys(ctr); + char *keyname = NULL; + TALLOC_CTX *ctx = talloc_tos(); + + if (!key) { + return false; + } + + keyname = talloc_strdup(ctx, key); + if (!keyname) { + return false; + } + keyname = normalize_reg_path(ctx, keyname); + + /* allocate some initial memory */ + + if (!(buffer = (uint8 *)SMB_MALLOC(1024))) { + return false; + } + buflen = 1024; + len = 0; + + /* store the number of subkeys */ + + len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys ); + + /* pack all the strings */ + + for (i=0; i<num_subkeys; i++) { + len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) ); + if ( len > buflen ) { + /* allocate some extra space */ + if ((buffer = (uint8 *)SMB_REALLOC( buffer, len*2 )) == NULL) { + DEBUG(0,("regdb_store_keys: Failed to realloc memory of size [%d]\n", len*2)); + ret = false; + goto done; + } + buflen = len*2; + + len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) ); + } + } + + /* finally write out the data */ + + dbuf.dptr = buffer; + dbuf.dsize = len; + if ( tdb_store_bystring( tdb_reg->tdb, keyname, dbuf, TDB_REPLACE ) == -1) { + ret = false; + goto done; + } + +done: + SAFE_FREE( buffer ); + return ret; +} + +/*********************************************************************** + Store the new subkey record and create any child key records that + do not currently exist + ***********************************************************************/ + +bool regdb_store_keys(const char *key, REGSUBKEY_CTR *ctr) +{ + int num_subkeys, i; + char *path = NULL; + REGSUBKEY_CTR *subkeys = NULL, *old_subkeys = NULL; + char *oldkeyname = NULL; + TALLOC_CTX *ctx = talloc_tos(); + + /* + * fetch a list of the old subkeys so we can determine if anything has + * changed + */ + + if (!(old_subkeys = TALLOC_ZERO_P(ctr, REGSUBKEY_CTR))) { + DEBUG(0,("regdb_store_keys: talloc() failure!\n")); + return false; + } + + regdb_fetch_keys(key, old_subkeys); + + if (ctr->num_subkeys == old_subkeys->num_subkeys) { + + for (i = 0; i<ctr->num_subkeys; i++) { + if (strcmp(ctr->subkeys[i], + old_subkeys->subkeys[i]) != 0) { + break; + } + } + if (i == ctr->num_subkeys) { + /* + * Nothing changed, no point to even start a tdb + * transaction + */ + TALLOC_FREE(old_subkeys); + return true; + } + } + + if (tdb_transaction_start( tdb_reg->tdb ) == -1) { + DEBUG(0, ("regdb_store_keys: tdb_transaction_start failed\n")); + return false; + } + + /* + * Re-fetch the old keys inside the transaction + */ + + TALLOC_FREE(old_subkeys); + + if (!(old_subkeys = TALLOC_ZERO_P(ctr, REGSUBKEY_CTR))) { + DEBUG(0,("regdb_store_keys: talloc() failure!\n")); + goto fail; + } + + regdb_fetch_keys(key, old_subkeys); + + /* store the subkey list for the parent */ + + if (!regdb_store_keys_internal(key, ctr) ) { + DEBUG(0,("regdb_store_keys: Failed to store new subkey list " + "for parent [%s]\n", key)); + goto fail; + } + + /* now delete removed keys */ + + num_subkeys = regsubkey_ctr_numkeys(old_subkeys); + for (i=0; i<num_subkeys; i++) { + oldkeyname = regsubkey_ctr_specific_key(old_subkeys, i); + + if (regsubkey_ctr_key_exists(ctr, oldkeyname)) { + /* + * It's still around, don't delete + */ + + continue; + } + + path = talloc_asprintf(ctx, "%s/%s", key, oldkeyname); + if (!path) { + goto fail; + } + path = normalize_reg_path(ctx, path); + if (!path) { + goto fail; + } + if (tdb_delete_bystring(tdb_reg->tdb, path) == -1) { + DEBUG(1, ("Deleting %s failed\n", path)); + goto fail; + } + + TALLOC_FREE(path); + path = talloc_asprintf(ctx, "%s/%s/%s", + REG_VALUE_PREFIX, + key, + oldkeyname ); + if (!path) { + goto fail; + } + path = normalize_reg_path(ctx, path); + if (!path) { + goto fail; + } + + /* + * Ignore errors here, we might have no values around + */ + tdb_delete_bystring( tdb_reg->tdb, path ); + TALLOC_FREE(path); + } + + TALLOC_FREE(old_subkeys); + + /* now create records for any subkeys that don't already exist */ + + num_subkeys = regsubkey_ctr_numkeys(ctr); + for (i=0; i<num_subkeys; i++) { + path = talloc_asprintf(ctx, "%s/%s", + key, + regsubkey_ctr_specific_key(ctr, i)); + if (!path) { + goto fail; + } + if (!(subkeys = TALLOC_ZERO_P(ctr, REGSUBKEY_CTR)) ) { + DEBUG(0,("regdb_store_keys: talloc() failure!\n")); + goto fail; + } + + if (regdb_fetch_keys( path, subkeys ) == -1) { + /* create a record with 0 subkeys */ + if (!regdb_store_keys_internal(path, subkeys)) { + DEBUG(0,("regdb_store_keys: Failed to store " + "new record for key [%s]\n", path)); + goto fail; + } + } + + TALLOC_FREE(subkeys); + TALLOC_FREE(path); + } + + if (tdb_transaction_commit( tdb_reg->tdb ) == -1) { + DEBUG(0, ("regdb_store_keys: Could not commit transaction\n")); + return false; + } + + return true; + + fail: + TALLOC_FREE(old_subkeys); + TALLOC_FREE(subkeys); + + if (tdb_transaction_cancel(tdb_reg->tdb) == -1) { + smb_panic("regdb_store_keys: tdb_transaction_cancel failed\n"); + } + + return false; +} + + +/*********************************************************************** + Retrieve an array of strings containing subkeys. Memory should be + released by the caller. + ***********************************************************************/ + +int regdb_fetch_keys(const char *key, REGSUBKEY_CTR *ctr) +{ + char *path = NULL; + uint32 num_items; + TDB_DATA dbuf; + uint8 *buf; + uint32 buflen, len; + int i; + fstring subkeyname; + int ret = -1; + TALLOC_CTX *frame = talloc_stackframe(); + + DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL")); + + path = talloc_strdup(talloc_tos(), key); + if (!path) { + goto fail; + } + + /* convert to key format */ + path = talloc_string_sub(talloc_tos(), path, "\\", "/"); + if (!path) { + goto fail; + } + strupper_m(path); + + if (tdb_read_lock_bystring_with_timeout(tdb_reg->tdb, path, 10) == -1) { + return 0; + } + + dbuf = tdb_fetch_bystring(tdb_reg->tdb, path); + ctr->seqnum = regdb_get_seqnum(); + + tdb_read_unlock_bystring(tdb_reg->tdb, path); + + + buf = dbuf.dptr; + buflen = dbuf.dsize; + + if ( !buf ) { + DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key)); + goto fail; + } + + len = tdb_unpack( buf, buflen, "d", &num_items); + + for (i=0; i<num_items; i++) { + len += tdb_unpack(buf+len, buflen-len, "f", subkeyname); + regsubkey_ctr_addkey(ctr, subkeyname); + } + + SAFE_FREE(dbuf.dptr); + + DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items)); + + ret = num_items; + fail: + TALLOC_FREE(frame); + return ret; +} + +/**************************************************************************** + Unpack a list of registry values frem the TDB + ***************************************************************************/ + +static int regdb_unpack_values(REGVAL_CTR *values, uint8 *buf, int buflen) +{ + int len = 0; + uint32 type; + fstring valuename; + uint32 size; + uint8 *data_p; + uint32 num_values = 0; + int i; + + /* loop and unpack the rest of the registry values */ + + len += tdb_unpack(buf+len, buflen-len, "d", &num_values); + + for ( i=0; i<num_values; i++ ) { + /* unpack the next regval */ + + type = REG_NONE; + size = 0; + data_p = NULL; + valuename[0] = '\0'; + len += tdb_unpack(buf+len, buflen-len, "fdB", + valuename, + &type, + &size, + &data_p); + + /* add the new value. Paranoid protective code -- make sure data_p is valid */ + + if (*valuename && size && data_p) { + regval_ctr_addvalue(values, valuename, type, + (const char *)data_p, size); + } + SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */ + + DEBUG(8,("specific: [%s], len: %d\n", valuename, size)); + } + + return len; +} + +/**************************************************************************** + Pack all values in all printer keys + ***************************************************************************/ + +static int regdb_pack_values(REGVAL_CTR *values, uint8 *buf, int buflen) +{ + int len = 0; + int i; + REGISTRY_VALUE *val; + int num_values; + + if ( !values ) + return 0; + + num_values = regval_ctr_numvals( values ); + + /* pack the number of values first */ + + len += tdb_pack( buf+len, buflen-len, "d", num_values ); + + /* loop over all values */ + + for ( i=0; i<num_values; i++ ) { + val = regval_ctr_specific_value( values, i ); + len += tdb_pack(buf+len, buflen-len, "fdB", + regval_name(val), + regval_type(val), + regval_size(val), + regval_data_p(val) ); + } + + return len; +} + +/*********************************************************************** + Retrieve an array of strings containing subkeys. Memory should be + released by the caller. + ***********************************************************************/ + +int regdb_fetch_values( const char* key, REGVAL_CTR *values ) +{ + TDB_DATA data; + char *keystr = NULL; + TALLOC_CTX *ctx = talloc_tos(); + + DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key)); + + keystr = talloc_asprintf(ctx, "%s/%s", REG_VALUE_PREFIX, key); + if (!keystr) { + return 0; + } + keystr = normalize_reg_path(ctx, keystr); + if (!keystr) { + return 0; + } + + if (tdb_read_lock_bystring_with_timeout(tdb_reg->tdb, keystr, 10) == -1) { + return 0; + } + + data = tdb_fetch_bystring(tdb_reg->tdb, keystr); + values->seqnum = regdb_get_seqnum(); + + tdb_read_unlock_bystring(tdb_reg->tdb, keystr); + + if (!data.dptr) { + /* all keys have zero values by default */ + return 0; + } + + regdb_unpack_values(values, data.dptr, data.dsize); + + SAFE_FREE(data.dptr); + return regval_ctr_numvals(values); +} + +bool regdb_store_values( const char *key, REGVAL_CTR *values ) +{ + TDB_DATA old_data, data; + char *keystr = NULL; + TALLOC_CTX *ctx = talloc_tos(); + int len, ret; + + DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key)); + + ZERO_STRUCT(data); + + len = regdb_pack_values(values, data.dptr, data.dsize); + if (len <= 0) { + DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n")); + return false; + } + + data.dptr = SMB_MALLOC_ARRAY( uint8, len ); + data.dsize = len; + + len = regdb_pack_values(values, data.dptr, data.dsize); + + SMB_ASSERT( len == data.dsize ); + + keystr = talloc_asprintf(ctx, "%s/%s", REG_VALUE_PREFIX, key ); + if (!keystr) { + SAFE_FREE(data.dptr); + return false; + } + keystr = normalize_reg_path(ctx, keystr); + if (!keystr) { + SAFE_FREE(data.dptr); + return false; + } + + old_data = tdb_fetch_bystring(tdb_reg->tdb, keystr); + + if ((old_data.dptr != NULL) + && (old_data.dsize == data.dsize) + && (memcmp(old_data.dptr, data.dptr, data.dsize) == 0)) { + SAFE_FREE(old_data.dptr); + SAFE_FREE(data.dptr); + return true; + } + + ret = tdb_trans_store_bystring(tdb_reg->tdb, keystr, data, TDB_REPLACE); + + SAFE_FREE( old_data.dptr ); + SAFE_FREE( data.dptr ); + + return ret != -1 ; +} + +static WERROR regdb_get_secdesc(TALLOC_CTX *mem_ctx, const char *key, + struct security_descriptor **psecdesc) +{ + char *tdbkey; + TDB_DATA data; + NTSTATUS status; + + DEBUG(10, ("regdb_get_secdesc: Getting secdesc of key [%s]\n", key)); + + if (asprintf(&tdbkey, "%s/%s", REG_SECDESC_PREFIX, key) == -1) { + return WERR_NOMEM; + } + normalize_dbkey(tdbkey); + + data = tdb_fetch_bystring(tdb_reg->tdb, tdbkey); + SAFE_FREE(tdbkey); + + if (data.dptr == NULL) { + return WERR_BADFILE; + } + + status = unmarshall_sec_desc(mem_ctx, (uint8 *)data.dptr, data.dsize, + psecdesc); + + SAFE_FREE(data.dptr); + + if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MEMORY)) { + return WERR_NOMEM; + } + + if (!NT_STATUS_IS_OK(status)) { + return WERR_REG_CORRUPT; + } + + return WERR_OK; +} + +static WERROR regdb_set_secdesc(const char *key, + struct security_descriptor *secdesc) +{ + prs_struct ps; + TALLOC_CTX *mem_ctx; + char *tdbkey; + WERROR err = WERR_NOMEM; + TDB_DATA tdbdata; + + if (!(mem_ctx = talloc_init("regdb_set_secdesc"))) { + return WERR_NOMEM; + } + + ZERO_STRUCT(ps); + + if (!(tdbkey = talloc_asprintf(mem_ctx, "%s/%s", REG_SECDESC_PREFIX, + key))) { + goto done; + } + normalize_dbkey(tdbkey); + + if (secdesc == NULL) { + /* assuming a delete */ + int tdb_ret; + + tdb_ret = tdb_trans_delete(tdb_reg->tdb, + string_term_tdb_data(tdbkey)); + if (tdb_ret == -1) { + err = ntstatus_to_werror(map_nt_error_from_unix(errno)); + } else { + err = WERR_OK; + } + + goto done; + } + + err = ntstatus_to_werror(marshall_sec_desc(mem_ctx, secdesc, + &tdbdata.dptr, + &tdbdata.dsize)); + if (!W_ERROR_IS_OK(err)) { + goto done; + } + + if (tdb_trans_store_bystring(tdb_reg->tdb, tdbkey, tdbdata, 0) == -1) { + err = ntstatus_to_werror(map_nt_error_from_unix(errno)); + goto done; + } + + done: + prs_mem_free(&ps); + TALLOC_FREE(mem_ctx); + return err; +} + +bool regdb_subkeys_need_update(REGSUBKEY_CTR *subkeys) +{ + return (regdb_get_seqnum() != subkeys->seqnum); +} + +bool regdb_values_need_update(REGVAL_CTR *values) +{ + return (regdb_get_seqnum() != values->seqnum); +} + +/* + * Table of function pointers for default access + */ + +REGISTRY_OPS regdb_ops = { + regdb_fetch_keys, + regdb_fetch_values, + regdb_store_keys, + regdb_store_values, + NULL, + regdb_get_secdesc, + regdb_set_secdesc, + regdb_subkeys_need_update, + regdb_values_need_update +}; |