From 4ccee0dc0cd6cacc6e1ed57eb2a7e3993ec81748 Mon Sep 17 00:00:00 2001 From: Michael Adam Date: Mon, 21 Jan 2008 00:07:41 +0100 Subject: Rename reg_smbconf.c to reg_backend_smbconf.c Michael (This used to be commit b85e5ee45075211dd3ab85ac79c2d856187d5e3e) --- source3/registry/reg_backend_smbconf.c | 275 +++++++++++++++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 source3/registry/reg_backend_smbconf.c (limited to 'source3/registry/reg_backend_smbconf.c') diff --git a/source3/registry/reg_backend_smbconf.c b/source3/registry/reg_backend_smbconf.c new file mode 100644 index 0000000000..a6e478200f --- /dev/null +++ b/source3/registry/reg_backend_smbconf.c @@ -0,0 +1,275 @@ +/* + * Unix SMB/CIFS implementation. + * Virtual Windows Registry Layer + * Copyright (C) Volker Lendecke 2006 + * Copyright (C) Michael Adam 2007 + * + * 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 . + */ + +#include "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_REGISTRY + +extern REGISTRY_OPS regdb_ops; /* these are the default */ + +static int smbconf_fetch_keys( const char *key, REGSUBKEY_CTR *subkey_ctr ) +{ + return regdb_ops.fetch_subkeys(key, subkey_ctr); +} + +static bool smbconf_store_keys( const char *key, REGSUBKEY_CTR *subkeys ) +{ + return regdb_ops.store_subkeys(key, subkeys); +} + +static int smbconf_fetch_values( const char *key, REGVAL_CTR *val ) +{ + return regdb_ops.fetch_values(key, val); +} + +static WERROR regval_hilvl_to_lolvl(TALLOC_CTX *mem_ctx, const char *valname, + struct registry_value *src, + REGISTRY_VALUE **dst) +{ + WERROR err; + DATA_BLOB value_data; + REGISTRY_VALUE *newval = NULL; + + if (dst == NULL) { + return WERR_INVALID_PARAM; + } + + err = registry_push_value(mem_ctx, src, &value_data); + if (!W_ERROR_IS_OK(err)) { + DEBUG(10, ("error calling registry_push_value.\n")); + return err; + } + + newval = regval_compose(mem_ctx, valname, src->type, + (char *)value_data.data, value_data.length); + if (newval == NULL) { + DEBUG(10, ("error composing registry value. (no memory?)\n")); + return WERR_NOMEM; + } + + *dst = newval; + return WERR_OK; +} + +static WERROR regval_lolvl_to_hilvl(TALLOC_CTX *mem_ctx, REGISTRY_VALUE *src, + struct registry_value **dst) +{ + if (dst == NULL) { + return WERR_INVALID_PARAM; + } + + return registry_pull_value(mem_ctx, dst, regval_type(src), + regval_data_p(src), regval_size(src), + regval_size(src)); +} + +/* + * Utility function used by smbconf_store_values to canonicalize + * a registry value. + * registry_pull_value / registry_push_value are used for (un)marshalling. + */ +static REGISTRY_VALUE *smbconf_canonicalize_regval(TALLOC_CTX *mem_ctx, + REGISTRY_VALUE *theval) +{ + char *valstr; + size_t len; + const char *canon_valname; + const char *canon_valstr; + bool inverse; + struct registry_value *value; + WERROR err; + TALLOC_CTX *tmp_ctx; + REGISTRY_VALUE *newval = NULL; + + if (!lp_parameter_is_valid(regval_name(theval)) || + lp_parameter_is_canonical(regval_name(theval))) + { + return theval; + } + + tmp_ctx = talloc_stackframe(); + if (tmp_ctx == NULL) { + DEBUG(1, ("out of memory...\n")); + goto done; + } + + err = regval_lolvl_to_hilvl(tmp_ctx, theval, &value); + if (!W_ERROR_IS_OK(err)) { + goto done; + } + + /* we need the value-string zero-terminated */ + valstr = value->v.sz.str; + len = value->v.sz.len; + if (valstr[len - 1] != '\0') { + DEBUG(10, ("string is not '\\0'-terminated. adding '\\0'.\n")); + valstr = TALLOC_REALLOC_ARRAY(tmp_ctx, valstr, char, len + 1); + if (valstr == NULL) { + DEBUG(1, ("out of memory\n")); + goto done; + } + valstr[len] = '\0'; + } + + if (!lp_canonicalize_parameter(regval_name(theval), &canon_valname, + &inverse)) + { + DEBUG(5, ("Error: lp_canonicalize_parameter failed after " + "lp_parameter_is_valid. This should not happen!\n")); + goto done; + } + DEBUG(10, ("old value name: '%s', canonical value name: '%s'\n", + regval_name(theval), canon_valname)); + if (inverse && lp_string_is_valid_boolean(valstr)) { + lp_invert_boolean(valstr, &canon_valstr); + } else { + canon_valstr = valstr; + } + + ZERO_STRUCTP(value); + value->type = REG_SZ; + value->v.sz.str = CONST_DISCARD(char *, canon_valstr); + value->v.sz.len = strlen(canon_valstr) + 1; + + err = regval_hilvl_to_lolvl(mem_ctx, canon_valname, value, &newval); + if (!W_ERROR_IS_OK(err)) { + DEBUG(10, ("error calling regval_hilvl_to_lolvl.\n")); + goto done; + } + +done: + TALLOC_FREE(tmp_ctx); + return newval; +} + +static bool smbconf_store_values( const char *key, REGVAL_CTR *val ) +{ + int i; + int num_values = regval_ctr_numvals(val); + REGVAL_CTR *new_val_ctr; + + /* + * we build a second regval container and copy over the values, + * possibly changing names to the canonical name, because when + * canonicalizing parameter names and replacing the original parameter + * (with reval_ctr_deletevalue and regval_ctr_addvalue) in the original + * container, the order would change and that is not so good in the + * "for" loop... :-o + */ + new_val_ctr = TALLOC_ZERO_P(val, REGVAL_CTR); + if (new_val_ctr == NULL) { + DEBUG(1, ("out of memory\n")); + return False; + } + + for (i=0; i < num_values; i++) { + REGISTRY_VALUE *theval = regval_ctr_specific_value(val, i); + const char *valname = regval_name(theval); + int res; + + DEBUG(10, ("inspecting value '%s'\n", valname)); + + /* unfortunately, we can not reject names that are not + * valid parameter names here, since e.g. regedit first + * creates values as "New Value #1" and so on and then + * drops into rename. */ + + if (regval_type(theval) != REG_SZ) { + DEBUG(1, ("smbconf_store_values: only registry value " + "type REG_SZ currently allowed under key " + "smbconf\n")); + return False; + } + + if (registry_smbconf_valname_forbidden(valname)) { + DEBUG(1, ("smbconf_store_values: value '%s' forbidden " + "in registry.\n", valname)); + return False; + } + + if (lp_parameter_is_valid(valname) && + !lp_parameter_is_canonical(valname)) + { + DEBUG(5, ("valid parameter '%s' given but it is a " + "synonym. going to canonicalize it.\n", + valname)); + theval = smbconf_canonicalize_regval(val, theval); + if (theval == NULL) { + DEBUG(10, ("error canonicalizing registry " + "value\n")); + return False; + } + } else { + DEBUG(10, ("%s parameter found, " + "copying it to new container...\n", + (lp_parameter_is_valid(valname)? + "valid":"unknown"))); + } + res = regval_ctr_copyvalue(new_val_ctr, theval); + if (res == 0) { + DEBUG(10, ("error calling regval_ctr_copyvalue. " + "(no memory?)\n")); + return False; + } + DEBUG(10, ("parameter copied. container now has %d values.\n", + res)); + } + return regdb_ops.store_values(key, new_val_ctr); +} + +static bool smbconf_reg_access_check(const char *keyname, uint32 requested, + uint32 *granted, + const struct nt_user_token *token) +{ + if (!(user_has_privileges(token, &se_disk_operators))) { + return False; + } + + *granted = REG_KEY_ALL; + return True; +} + +static WERROR smbconf_get_secdesc(TALLOC_CTX *mem_ctx, const char *key, + struct security_descriptor **psecdesc) +{ + return regdb_ops.get_secdesc(mem_ctx, key, psecdesc); +} + +static WERROR smbconf_set_secdesc(const char *key, + struct security_descriptor *secdesc) +{ + return regdb_ops.set_secdesc(key, secdesc); +} + + +/* + * Table of function pointers for accessing smb.conf data + */ + +REGISTRY_OPS smbconf_reg_ops = { + .fetch_subkeys = smbconf_fetch_keys, + .fetch_values = smbconf_fetch_values, + .store_subkeys = smbconf_store_keys, + .store_values = smbconf_store_values, + .reg_access_check = smbconf_reg_access_check, + .get_secdesc = smbconf_get_secdesc, + .set_secdesc = smbconf_set_secdesc, +}; -- cgit