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acl_table_user.cc
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2409 lines (2153 loc) · 88.2 KB
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/* Copyright (c) 2018, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
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, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include "sql/auth/acl_table_user.h" /* For user table data */
#include <stdlib.h> /* atoi */
#include <string.h> /* strlen, strcmp, NULL, memcmp, memcpy */
#include <algorithm> /* sort */
#include <map> /* map */
#include "field_types.h" /* MYSQL_TYPE_ENUM, MYSQL_TYPE_JSON */
#include "lex_string.h" /* LEX_CSTRING */
#include "m_ctype.h" /* my_charset_* */
#include "m_string.h" /* STRING_WITH_LEN */
#include "my_base.h" /* HA_ERR_* */
#include "my_dbug.h" /* DBUG macros */
#include "my_inttypes.h" /* MYF, uchar, longlong, ulonglong */
#include "my_loglevel.h" /* WARNING_LEVEL, loglevel, ERROR_LEVEL */
#include "my_sqlcommand.h" /* SQLCOM_ALTER_USER, SQLCOM_GRANT */
#include "my_sys.h" /* my_error */
#include "mysql/components/services/bits/psi_bits.h" /* PSI_NOT_INSTRUMENTED */
#include "mysql/components/services/log_builtins.h" /* for LogEvent, LogErr */
#include "mysql/plugin.h" /* st_mysql_plugin, MYSQL_AUTHENTICATION_PLUGIN */
#include "mysql/plugin_auth.h" /* st_mysql_auth */
#include "mysql_time.h" /* MYSQL_TIME, MYSQL_TIMESTAMP_ERROR */
#include "mysqld_error.h" /* ER_* */
#include "prealloced_array.h" /* Prealloced_array */
#include "sql/auth/auth_acls.h" /* ACLs */
#include "sql/auth/auth_common.h" /* User_table_schema, ... */
#include "sql/auth/auth_internal.h" /* acl_print_ha_error */
#include "sql/auth/partial_revokes.h"
#include "sql/auth/sql_auth_cache.h" /* global_acl_memory */
#include "sql/auth/sql_authentication.h" /* Cached_authentication_plugins */
#include "sql/auth/sql_user_table.h" /* Acl_table_intact */
#include "sql/auth/user_table.h" /* replace_user_table */
#include "sql/field.h" /* Field, Field_json, Field_enum, TYPE_OK */
#include "sql/handler.h" /* handler, DB_TYPE_NDBCLUSTER, handlerton */
#include "sql/item_func.h" /* mqh_used */
#include "sql/iterators/row_iterator.h" /* RowIterator */
#include "sql/key.h" /* key_copy, KEY */
#include "sql/mysqld.h" /* specialflag */
#include "sql/sql_class.h" /* THD */
#include "sql/sql_const.h" /* ACL_ALLOC_BLOCK_SIZE, MAX_KEY_LENGTH */
#include "sql/sql_executor.h"
#include "sql/sql_lex.h" /* LEX */
#include "sql/sql_plugin.h" /* plugin_unlock, my_plugin_lock_by_name */
#include "sql/sql_plugin_ref.h" /* plugin_decl, plugin_ref */
#include "sql/sql_time.h" /* str_to_time_with_warn */
#include "sql/sql_update.h" /* compare_records */
#include "sql/system_variables.h" /* System_variables */
#include "sql/table.h" /* TABLE, TABLE_SHARE, ... */
#include "sql/tztime.h" /* Time_zone */
#include "sql_string.h" /* String */
#include "template_utils.h" /* down_cast */
#include "typelib.h" /* TYPELIB */
#include "violite.h" /* SSL_* */
#define INVALID_DATE "0000-00-00 00:00:00"
namespace consts {
/** Initial timestamp */
const my_timeval BEGIN_TIMESTAMP = {0, 0};
/** Error indicating table operation error */
const int CRITICAL_ERROR = -1;
/** Empty string */
const std::string empty_string("");
/* Name of the fields in mysql.user.user_attributes */
/** For secondary password */
const std::string additional_password("additional_password");
/** For partial revokes */
const std::string Restrictions("Restrictions");
/** for password locking */
const std::string Password_locking("Password_locking");
/** underkeys of password locking */
const std::string failed_login_attempts("failed_login_attempts");
/** underkeys of password locking */
const std::string password_lock_time_days("password_lock_time_days");
/** metadata tag */
const std::string json_metadata_tag("metadata");
/** comment tag */
const std::string json_comment_tag("comment");
/** multi factor authentication methods */
const std::string json_multi_factor_authentication(
"multi_factor_authentication");
} // namespace consts
static bool replace_user_metadata(const std::string &json_blob,
bool expect_text, TABLE *user_table);
namespace acl_table {
/** Keys used in mysql.user.user_attributes */
static std::map<const User_attribute_type, const std::string>
attribute_type_to_str = {
{User_attribute_type::ADDITIONAL_PASSWORD, consts::additional_password},
{User_attribute_type::RESTRICTIONS, consts::Restrictions},
{User_attribute_type::PASSWORD_LOCKING, consts::Password_locking},
{User_attribute_type::METADATA, consts::json_metadata_tag},
{User_attribute_type::COMMENT, consts::json_comment_tag},
{User_attribute_type::MULTI_FACTOR_AUTHENTICATION_DATA,
consts::json_multi_factor_authentication}};
Acl_user_attributes::Acl_user_attributes(MEM_ROOT *mem_root,
bool read_restrictions,
Auth_id &auth_id,
Access_bitmask global_privs)
: m_mem_root(mem_root),
m_read_restrictions(read_restrictions),
m_auth_id(auth_id),
m_additional_password(),
m_restrictions(),
m_global_privs(global_privs),
m_password_lock(),
m_mfa(nullptr),
m_user_attributes_json(nullptr) {}
Acl_user_attributes::Acl_user_attributes(MEM_ROOT *mem_root,
bool read_restrictions,
Auth_id &auth_id,
Restrictions *restrictions,
I_multi_factor_auth *mfa)
: Acl_user_attributes(mem_root, read_restrictions, auth_id, ALL_ACCESS) {
if (restrictions) m_restrictions = *restrictions;
m_mfa = mfa;
}
Acl_user_attributes::~Acl_user_attributes() { m_restrictions.clear_db(); }
bool Acl_user_attributes::consume_user_attributes_json(Json_dom_ptr json) {
if (!json || json->json_type() != enum_json_type::J_OBJECT) {
json = create_dom_ptr<Json_object>();
if (!json) return true;
}
Json_object *ob = down_cast<Json_object *>(json.get());
Json_dom *metadata =
ob->get(attribute_type_to_str[User_attribute_type::METADATA]);
if (metadata) {
Json_object *metadata_ob = down_cast<Json_object *>(metadata);
m_user_attributes_json = create_dom_ptr<Json_object>();
Json_object *user_attributes_ob =
down_cast<Json_object *>(m_user_attributes_json.get());
user_attributes_ob->add_clone(
attribute_type_to_str[User_attribute_type::METADATA], metadata_ob);
}
return false;
}
void Acl_user_attributes::report_and_remove_invalid_db_restrictions(
DB_restrictions &db_restrictions, Access_bitmask mask, enum loglevel level,
ulonglong errcode) {
if (!db_restrictions.is_empty()) {
for (auto &itr : db_restrictions()) {
Access_bitmask privs = itr.second;
if (privs != (privs & mask)) {
std::string invalid_privs;
std::string separator(", ");
bool second = false;
Access_bitmask filtered_privs = privs & ~mask;
if (filtered_privs)
db_restrictions.remove(itr.first.c_str(), filtered_privs);
while (filtered_privs != 0) {
std::string one_priv = get_one_priv(filtered_privs);
if (one_priv.length()) {
if (second) invalid_privs.append(separator);
invalid_privs.append(one_priv);
if (!second) second = true;
}
}
if (!invalid_privs.length())
invalid_privs.append("<unknown_privileges>");
std::string auth_id;
m_auth_id.auth_str(&auth_id);
LogErr(level, errcode, auth_id.c_str(), invalid_privs.c_str(),
itr.first.length() ? itr.first.c_str() : "<invalid_database>");
}
}
/*
Now, remove the databases with no restrictions without invalidating
the internal container of DB_restrictions
*/
db_restrictions.remove(0);
}
}
bool Acl_user_attributes::deserialize_multi_factor(
const Json_object &json_object) {
Json_dom *mfa = json_object.get(
attribute_type_to_str
[User_attribute_type::MULTI_FACTOR_AUTHENTICATION_DATA]);
if (mfa) {
if (mfa->json_type() != enum_json_type::J_ARRAY) return true;
Json_array *mfa_arr = down_cast<Json_array *>(mfa);
I_multi_factor_auth *i_mfa =
(mfa_arr->size() ? new (&global_acl_memory)
Multi_factor_auth_list(&global_acl_memory)
: nullptr);
for (uint i = 0; i < mfa_arr->size(); i++) {
i_mfa->add_factor(new (&global_acl_memory)
Multi_factor_auth_info(&global_acl_memory));
Json_dom *mfa_arr_obj = (*mfa_arr)[i];
if (i_mfa->deserialize(i, mfa_arr_obj)) return true;
}
set_mfa(i_mfa);
}
return false;
}
bool Acl_user_attributes::deserialize_password_lock(
const Json_object &json_object) {
/* password locking */
m_password_lock.password_lock_time_days = 0;
m_password_lock.failed_login_attempts = 0;
const Json_dom *password_locking_dom = json_object.get(
attribute_type_to_str[User_attribute_type::PASSWORD_LOCKING]);
if (password_locking_dom) {
if (password_locking_dom->json_type() != enum_json_type::J_OBJECT)
return true;
const Json_object *password_locking =
down_cast<const Json_object *>(password_locking_dom);
const Json_dom *password_lock_time_days_dom =
password_locking->get(consts::password_lock_time_days);
if (password_lock_time_days_dom) {
if (password_lock_time_days_dom->json_type() != enum_json_type::J_INT)
return true;
const Json_int *password_lock_time_days =
down_cast<const Json_int *>(password_lock_time_days_dom);
longlong val = password_lock_time_days->value();
if (val < -1 || val > INT_MAX) return true;
m_password_lock.password_lock_time_days = val;
}
const Json_dom *failed_login_attempts_dom =
password_locking->get(consts::failed_login_attempts);
if (failed_login_attempts_dom) {
if (failed_login_attempts_dom->json_type() != enum_json_type::J_INT) {
m_password_lock.password_lock_time_days = 0;
return true;
}
const Json_int *failed_login_attempts =
down_cast<const Json_int *>(failed_login_attempts_dom);
longlong val = failed_login_attempts->value();
if (val < 0 || val > UINT_MAX) {
m_password_lock.password_lock_time_days = 0;
return true;
}
m_password_lock.failed_login_attempts = val;
}
}
return false;
}
bool Acl_user_attributes::deserialize(const Json_object &json_object) {
{
/** Second password */
const Json_dom *additional_password_dom = json_object.get(
attribute_type_to_str[User_attribute_type::ADDITIONAL_PASSWORD]);
if (additional_password_dom) {
if (additional_password_dom->json_type() != enum_json_type::J_STRING)
return true;
const Json_string *additional_password =
down_cast<const Json_string *>(additional_password_dom);
m_additional_password = additional_password->value();
}
}
/* In cse of writes, DB restrictions are always overwritten */
if (m_read_restrictions) {
DB_restrictions db_restrictions;
if (db_restrictions.add(json_object)) return true;
/* Filtering & warnings */
report_and_remove_invalid_db_restrictions(
db_restrictions, DB_OP_ACLS, WARNING_LEVEL,
ER_WARN_INCORRECT_PRIVILEGE_FOR_DB_RESTRICTIONS);
report_and_remove_invalid_db_restrictions(db_restrictions, m_global_privs,
WARNING_LEVEL,
ER_WARN_INVALID_DB_RESTRICTIONS);
m_restrictions.set_db(db_restrictions);
}
if (deserialize_password_lock(json_object)) return true;
if (deserialize_multi_factor(json_object)) return true;
return false;
}
bool Acl_user_attributes::serialize(Json_object &json_object) const {
if (m_additional_password.length()) {
Json_string additional_password(m_additional_password);
if (json_object.add_clone(
attribute_type_to_str[User_attribute_type::ADDITIONAL_PASSWORD],
&additional_password))
return true;
} else if (m_user_attributes_json) {
Json_object *obj = down_cast<Json_object *>(m_user_attributes_json.get());
obj->remove(
attribute_type_to_str[User_attribute_type::ADDITIONAL_PASSWORD]);
}
if (!m_restrictions.db().is_empty()) {
Json_array restrictions_array;
m_restrictions.db().get_as_json(restrictions_array);
if (json_object.add_clone(
attribute_type_to_str[User_attribute_type::RESTRICTIONS],
&restrictions_array))
return true;
} else if (m_user_attributes_json) {
Json_object *obj = down_cast<Json_object *>(m_user_attributes_json.get());
obj->remove(attribute_type_to_str[User_attribute_type::RESTRICTIONS]);
}
if (m_password_lock.password_lock_time_days ||
m_password_lock.failed_login_attempts) {
Json_object password_lock;
Json_int password_lock_time_days(m_password_lock.password_lock_time_days);
Json_int failed_login_attempts(m_password_lock.failed_login_attempts);
password_lock.add_clone(consts::password_lock_time_days,
&password_lock_time_days);
password_lock.add_clone(consts::failed_login_attempts,
&failed_login_attempts);
json_object.add_clone(
attribute_type_to_str[User_attribute_type::PASSWORD_LOCKING],
&password_lock);
} else if (m_user_attributes_json) {
Json_object *obj = down_cast<Json_object *>(m_user_attributes_json.get());
obj->remove(attribute_type_to_str[User_attribute_type::PASSWORD_LOCKING]);
}
if (m_mfa) {
Json_array mfa_arr;
if (m_mfa->serialize(mfa_arr)) return true;
json_object.add_clone(
attribute_type_to_str
[User_attribute_type::MULTI_FACTOR_AUTHENTICATION_DATA],
&mfa_arr);
}
if (m_user_attributes_json) {
Json_dom_ptr copy_attributes = m_user_attributes_json->clone();
Json_object_ptr tmp(down_cast<Json_object *>(copy_attributes.release()));
json_object.merge_patch(std::move(tmp));
}
return false;
}
bool Acl_user_attributes::update_additional_password(std::string &credential) {
if (credential.length()) {
m_additional_password = credential;
} else {
return true;
}
return false;
}
void Acl_user_attributes::discard_additional_password() {
m_additional_password.clear();
}
const std::string Acl_user_attributes::get_additional_password() const {
return m_additional_password;
}
Restrictions Acl_user_attributes::get_restrictions() const {
return m_restrictions;
}
void Acl_user_attributes::update_restrictions(
const Restrictions &restricitions) {
m_restrictions = restricitions;
}
namespace {
/**
Helper function to parse mysql.user.user_attributes column
@param [in] table Handle to mysql.user table
@param [in] table_schema mysql.user schema version
@param [out] user_attributes Deserialized user attributes
@returns status of parsing user_attributes column
@retval false Success
@retval true Problem parsing the column
*/
bool parse_user_attributes(TABLE *table, User_table_schema *table_schema,
Acl_user_attributes &user_attributes) {
// Read only if the column of type JSON and it is not null.
if (table->field[table_schema->user_attributes_idx()]->type() ==
MYSQL_TYPE_JSON &&
!table->field[table_schema->user_attributes_idx()]->is_null()) {
Json_wrapper json_wrapper;
if ((down_cast<Field_json *>(
table->field[table_schema->user_attributes_idx()])
->val_json(&json_wrapper)))
return true;
if (user_attributes.consume_user_attributes_json(json_wrapper.clone_dom()))
return true;
const Json_object *json_object =
down_cast<const Json_object *>(json_wrapper.to_dom());
if (user_attributes.deserialize(*json_object)) return true;
}
return false;
}
} // namespace
Acl_table_user_writer_status::Acl_table_user_writer_status()
: skip_cache_update(true),
updated_rights(NO_ACCESS),
error(consts::CRITICAL_ERROR),
password_change_timestamp(consts::BEGIN_TIMESTAMP),
second_cred(consts::empty_string),
restrictions(),
password_lock(),
multi_factor(nullptr) {}
/**
mysql.user table writer constructor
Note: Table handle must be non-null.
@param [in] thd Thread handle
@param [in] table Handle to mysql.user table
@param [in] combo User information
@param [in] rights Updated global privileges
@param [in] revoke_grant If its REVOKE statement
@param [in] can_create_user Whether user has ability to create new user
@param [in] what_to_update Things to be updated
@param [in] restrictions Restrictions of the user, if there is any
@param [in] mfa Interface pointer to Multi factor authentication
methods
*/
Acl_table_user_writer::Acl_table_user_writer(
THD *thd, TABLE *table, LEX_USER *combo, Access_bitmask rights,
bool revoke_grant, bool can_create_user,
Pod_user_what_to_update what_to_update,
Restrictions *restrictions = nullptr, I_multi_factor_auth *mfa = nullptr)
: Acl_table(thd, table, acl_table::Acl_table_operation::OP_INSERT),
m_has_user_application_user_metadata(false),
m_combo(combo),
m_rights(rights),
m_revoke_grant(revoke_grant),
m_can_create_user(can_create_user),
m_what_to_update(what_to_update),
m_table_schema(nullptr),
m_restrictions(restrictions),
m_mfa(mfa) {
if (table) {
User_table_schema_factory user_table_schema_factory;
m_table_schema = user_table_schema_factory.get_user_table_schema(table);
}
}
/** Cleanup */
Acl_table_user_writer::~Acl_table_user_writer() {
if (m_table_schema) delete m_table_schema;
}
/**
Perform add/update to mysql.user table
@returns status of add/update operation. In case of success it contains
information that's useful for cache update.
*/
Acl_table_user_writer_status Acl_table_user_writer::driver() {
bool builtin_plugin = false;
bool update_password = (m_what_to_update.m_what & PLUGIN_ATTR);
Table_op_error_code error;
LEX *lex = m_thd->lex;
Acl_table_user_writer_status return_value;
Acl_table_user_writer_status err_return_value;
DBUG_TRACE;
assert(assert_acl_cache_write_lock(m_thd));
/* Setup the table for writing */
if (setup_table(error, builtin_plugin)) {
return_value.error = error;
return return_value;
}
if (m_operation == Acl_table_operation::OP_UPDATE) {
if ((lex->sql_command != SQLCOM_ALTER_USER) && !m_rights &&
lex->ssl_type == SSL_TYPE_NOT_SPECIFIED && !lex->mqh.specified_limits &&
!m_revoke_grant && (!builtin_plugin || !update_password) &&
!m_restrictions) {
DBUG_PRINT("info", ("Dynamic privileges exit path"));
/*
At this point, even though there is no error,
we want to skip updates to cache because it's a no-op.
*/
return_value.error = 0;
return return_value;
}
}
std::string current_password;
if ((m_what_to_update.m_what & USER_ATTRIBUTES) &&
(m_what_to_update.m_user_attributes & USER_ATTRIBUTE_RETAIN_PASSWORD))
current_password = get_current_credentials();
/*
Set in memory copy of Multi factor authentication details. In case ALTER
USER is executed to alter Multi factor authentication attributes,
update_user_attributes call will modify the needed data structures, else in
case of GRANT/REVOKE in memory copy is returned.
*/
if (m_mfa) return_value.multi_factor = m_mfa;
if (update_authentication_info(return_value) ||
update_privileges(return_value) || update_ssl_properties() ||
update_user_attributes(current_password, return_value) ||
update_user_resources() || update_password_expiry() ||
update_password_history() || update_password_reuse() ||
update_password_require_current() || update_account_locking() ||
update_user_application_user_metadata()) {
return err_return_value;
}
(void)finish_operation(error);
if (!error) {
return_value.error = 0;
return_value.skip_cache_update = false;
}
return return_value;
}
/**
Position user table.
Try to find a row matching with given account information. If one is
found, set record pointer to it and set operation type as UPDATE. If no
record is found, then set record pointer to empty record.
Raises error in DA in various cases where sanity of table and
intention of operation is checked.
@param [out] error Table operation error
@param [out] builtin_plugin For existing record, if authentication plugin
is one of the builtins or not.
@returns Operation status
@retval false Table is positioned. In case of insert, it means no record
is found for given (user,host). In case of update, table
is set to point to existing record.
@retval true Error positioning table.
*/
bool Acl_table_user_writer::setup_table(int &error, bool &builtin_plugin) {
bool update_password = (m_what_to_update.m_what & PLUGIN_ATTR);
switch (m_operation) {
case Acl_table_operation::OP_INSERT:
case Acl_table_operation::OP_UPDATE: {
uchar user_key[MAX_KEY_LENGTH];
Acl_table_intact table_intact(m_thd);
LEX_CSTRING old_plugin;
error = consts::CRITICAL_ERROR;
builtin_plugin = false;
if (table_intact.check(m_table, ACL_TABLES::TABLE_USER)) return true;
m_table->use_all_columns();
assert(m_combo->host.str != nullptr);
m_table->field[m_table_schema->host_idx()]->store(
m_combo->host.str, m_combo->host.length, system_charset_info);
m_table->field[m_table_schema->user_idx()]->store(
m_combo->user.str, m_combo->user.length, system_charset_info);
key_copy(user_key, m_table->record[0], m_table->key_info,
m_table->key_info->key_length);
error = m_table->file->ha_index_read_idx_map(
m_table->record[0], 0, user_key, HA_WHOLE_KEY, HA_READ_KEY_EXACT);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
error != HA_ERR_LOCK_DEADLOCK);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
error != HA_ERR_LOCK_WAIT_TIMEOUT);
DBUG_EXECUTE_IF("wl7158_replace_user_table_1",
error = HA_ERR_LOCK_DEADLOCK;);
if (error) {
if (error != HA_ERR_KEY_NOT_FOUND && error != HA_ERR_END_OF_FILE) {
acl_print_ha_error(error);
return true;
}
m_operation = Acl_table_operation::OP_INSERT;
/*
The user record wasn't found; if the intention was to revoke
privileges (indicated by what == 'N') then execution must fail
now.
*/
if (m_revoke_grant) {
bool ret = report_missing_user_grant_message(
m_thd, false, m_combo->user.str, m_combo->host.str, nullptr,
ER_NONEXISTING_GRANT);
/*
Return 1 as an indication that expected error occurred during
handling of REVOKE statement for an unknown user.
*/
if (ret) error = 1;
return ret;
}
if (m_thd->lex->sql_command == SQLCOM_ALTER_USER) {
/* Entry should have existsed since this is ALTER USER */
error = 1;
return true;
}
optimize_plugin_compare_by_pointer(
&m_combo->first_factor_auth_info.plugin);
builtin_plugin =
auth_plugin_is_built_in(m_combo->first_factor_auth_info.plugin.str);
/* The user record was neither present nor the intention was to
* create it */
if (!m_can_create_user) {
if (!update_password) {
/* Have come here to GRANT privilege to the non-existing user */
my_error(ER_CANT_CREATE_USER_WITH_GRANT, MYF(0));
} else {
/* Have come here to update the password of the non-existing
* user
*/
my_error(ER_PASSWORD_NO_MATCH, MYF(0), m_combo->user.str,
m_combo->host.str);
}
error = 1;
return true;
}
if (m_thd->lex->sql_command == SQLCOM_GRANT) {
my_error(ER_PASSWORD_NO_MATCH, MYF(0), m_combo->user.str,
m_combo->host.str);
error = 1;
return true;
}
restore_record(m_table, s->default_values);
assert(m_combo->host.str != nullptr);
m_table->field[m_table_schema->host_idx()]->store(
m_combo->host.str, m_combo->host.length, system_charset_info);
m_table->field[m_table_schema->user_idx()]->store(
m_combo->user.str, m_combo->user.length, system_charset_info);
} else {
/* There is a matching user record */
m_operation = Acl_table_operation::OP_UPDATE;
/* Check if there is such a user in user table in memory? */
if (!find_acl_user(m_combo->host.str, m_combo->user.str, false)) {
my_error(ER_PASSWORD_NO_MATCH, MYF(0));
error = consts::CRITICAL_ERROR;
return true;
}
store_record(m_table, record[1]); // Save copy for update
/* 1. resolve plugins in the LEX_USER struct if needed */
/* Get old plugin value from storage. */
old_plugin.str = get_field(
m_thd->mem_root, m_table->field[m_table_schema->plugin_idx()]);
if (old_plugin.str == nullptr || *old_plugin.str == '\0') {
my_error(ER_PASSWORD_NO_MATCH, MYF(0));
error = 1;
return true;
}
/*
It is important not to include the trailing '\0' in the string
length because otherwise the plugin hash search will fail.
*/
old_plugin.length = strlen(old_plugin.str);
/* Optimize for pointer comparison of built-in plugin name */
optimize_plugin_compare_by_pointer(&old_plugin);
builtin_plugin = auth_plugin_is_built_in(old_plugin.str);
}
break;
}
default:
return false;
}
return false;
}
/**
Finish the operation
Depending on type of operation (INSERT/UPDATE), either insert a new row
in mysql.user table or update an existing row using SE APIs.
@param [out] out_error Table operation error, if any
@returns status of write operation
*/
Acl_table_op_status Acl_table_user_writer::finish_operation(
Table_op_error_code &out_error) {
switch (m_operation) {
case Acl_table_operation::OP_INSERT: {
out_error = m_table->file->ha_write_row(m_table->record[0]); // insert
assert(out_error != HA_ERR_FOUND_DUPP_KEY);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
out_error != HA_ERR_LOCK_DEADLOCK);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
out_error != HA_ERR_LOCK_WAIT_TIMEOUT);
DBUG_EXECUTE_IF("wl7158_replace_user_table_3",
out_error = HA_ERR_LOCK_DEADLOCK;);
if (out_error) {
if (!m_table->file->is_ignorable_error(out_error)) {
acl_print_ha_error(out_error);
out_error = consts::CRITICAL_ERROR;
return Acl_table_op_status::OP_ERROR_CRITICAL;
}
}
break;
}
case Acl_table_operation::OP_UPDATE: {
/*
We should NEVER delete from the user table, as a uses can still
use mysqld even if he doesn't have any privileges in the user table!
*/
if (compare_records(m_table)) {
out_error = m_table->file->ha_update_row(m_table->record[1],
m_table->record[0]);
assert(out_error != HA_ERR_FOUND_DUPP_KEY);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
out_error != HA_ERR_LOCK_DEADLOCK);
assert(m_table->file->ht->db_type == DB_TYPE_NDBCLUSTER ||
out_error != HA_ERR_LOCK_WAIT_TIMEOUT);
DBUG_EXECUTE_IF("wl7158_replace_user_table_2",
out_error = HA_ERR_LOCK_DEADLOCK;);
if (out_error && out_error != HA_ERR_RECORD_IS_THE_SAME) {
acl_print_ha_error(out_error);
out_error = consts::CRITICAL_ERROR;
return Acl_table_op_status::OP_ERROR_CRITICAL;
} else
out_error = 0;
}
break;
}
default:
out_error = 0;
}
return Acl_table_op_status::OP_OK;
}
/**
Update user's authentication information
Raises error in DA if mysql.user table does not have following columns:
- plugin
- password_last_changed
- password_expired
@param [out] return_value To update password change timestamp
@returns update operation status
@retval false Success
@retval true Error storing authentication info or table is not in
expected format
*/
bool Acl_table_user_writer::update_authentication_info(
Acl_table_user_writer_status &return_value) {
if (m_what_to_update.m_what & PLUGIN_ATTR ||
(m_what_to_update.m_what & DEFAULT_AUTH_ATTR &&
m_operation == Acl_table_operation::OP_INSERT)) {
bool builtin_plugin;
if (m_table->s->fields >= m_table_schema->plugin_idx()) {
m_table->field[m_table_schema->plugin_idx()]->store(
m_combo->first_factor_auth_info.plugin.str,
m_combo->first_factor_auth_info.plugin.length, system_charset_info);
m_table->field[m_table_schema->plugin_idx()]->set_notnull();
m_table->field[m_table_schema->authentication_string_idx()]->store(
m_combo->first_factor_auth_info.auth.str,
m_combo->first_factor_auth_info.auth.length, &my_charset_utf8mb3_bin);
m_table->field[m_table_schema->authentication_string_idx()]
->set_notnull();
} else {
my_error(ER_BAD_FIELD_ERROR, MYF(0), "plugin", "mysql.user");
return true;
}
/* If we change user plugin then check if it is builtin plugin */
optimize_plugin_compare_by_pointer(&m_combo->first_factor_auth_info.plugin);
builtin_plugin =
auth_plugin_is_built_in(m_combo->first_factor_auth_info.plugin.str);
/*
we update the password last changed field whenever there is change
in auth str and plugin is built in
*/
if (m_table->s->fields > m_table_schema->password_last_changed_idx()) {
if (builtin_plugin) {
/*
Calculate time stamp up to seconds elapsed from 1 Jan 1970
00:00:00.
*/
return_value.password_change_timestamp =
m_thd->query_start_timeval_trunc(0);
m_table->field[m_table_schema->password_last_changed_idx()]
->store_timestamp(&return_value.password_change_timestamp);
m_table->field[m_table_schema->password_last_changed_idx()]
->set_notnull();
}
} else {
my_error(ER_BAD_FIELD_ERROR, MYF(0), "password_last_changed",
"mysql.user");
return true;
}
/* if we have a password supplied we update the expiration field */
if (m_table->s->fields > m_table_schema->password_expired_idx()) {
m_table->field[m_table_schema->password_expired_idx()]->store(
"N", 1, system_charset_info);
} else {
my_error(ER_BAD_FIELD_ERROR, MYF(0), "password_expired", "mysql.user");
return true;
}
}
return false;
}
/**
Update global privileges for user
@param [out] return_value To store updated global privileges
@returns Update status for global privileges
*/
bool Acl_table_user_writer::update_privileges(
Acl_table_user_writer_status &return_value) {
if (m_what_to_update.m_what & ACCESS_RIGHTS_ATTR) {
/* Update table columns with new privileges */
char what = m_revoke_grant ? 'N' : 'Y';
Field **tmp_field;
Access_bitmask priv;
for (tmp_field = m_table->field + 2, priv = SELECT_ACL;
*tmp_field && (*tmp_field)->real_type() == MYSQL_TYPE_ENUM &&
((Field_enum *)(*tmp_field))->typelib->count == 2;
tmp_field++, priv <<= 1) {
if (priv & m_rights) {
// set requested privileges
(*tmp_field)->store(&what, 1, &my_charset_latin1);
DBUG_PRINT("info",
("Updating field %lu with privilege %c",
(ulong)(m_table->field + 2 - tmp_field), (char)what));
}
}
if (m_table->s->fields > m_table_schema->create_role_priv_idx()) {
if (CREATE_ROLE_ACL & m_rights) {
m_table->field[m_table_schema->create_role_priv_idx()]->store(
&what, 1, &my_charset_latin1);
}
if (DROP_ROLE_ACL & m_rights) {
m_table->field[m_table_schema->drop_role_priv_idx()]->store(
&what, 1, &my_charset_latin1);
}
}
}
return_value.updated_rights = get_user_privileges();
DBUG_PRINT("info", ("Privileges on disk are now %" PRIu32,
return_value.updated_rights));
DBUG_PRINT("info", ("table fields: %d", m_table->s->fields));
return false;
}
/**
Update SSL properties
@returns Update status
@retval false Success
@retval true Table is not in expected format
*/
bool Acl_table_user_writer::update_ssl_properties() {
if (m_what_to_update.m_what & SSL_ATTR) {
LEX *lex = m_thd->lex;
if (m_table->s->fields >= m_table_schema->x509_subject_idx()) {
switch (lex->ssl_type) {
case SSL_TYPE_ANY: {
m_table->field[m_table_schema->ssl_type_idx()]->store(
STRING_WITH_LEN("ANY"), &my_charset_latin1);
m_table->field[m_table_schema->ssl_cipher_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_issuer_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_subject_idx()]->store(
"", 0, &my_charset_latin1);
break;
}
case SSL_TYPE_X509: {
m_table->field[m_table_schema->ssl_type_idx()]->store(
STRING_WITH_LEN("X509"), &my_charset_latin1);
m_table->field[m_table_schema->ssl_cipher_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_issuer_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_subject_idx()]->store(
"", 0, &my_charset_latin1);
break;
}
case SSL_TYPE_SPECIFIED: {
m_table->field[m_table_schema->ssl_type_idx()]->store(
STRING_WITH_LEN("SPECIFIED"), &my_charset_latin1);
m_table->field[m_table_schema->ssl_cipher_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_issuer_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_subject_idx()]->store(
"", 0, &my_charset_latin1);
if (lex->ssl_cipher)
m_table->field[m_table_schema->ssl_cipher_idx()]->store(
lex->ssl_cipher, strlen(lex->ssl_cipher), system_charset_info);
if (lex->x509_issuer)
m_table->field[m_table_schema->x509_issuer_idx()]->store(
lex->x509_issuer, strlen(lex->x509_issuer),
system_charset_info);
if (lex->x509_subject)
m_table->field[m_table_schema->x509_subject_idx()]->store(
lex->x509_subject, strlen(lex->x509_subject),
system_charset_info);
break;
}
case SSL_TYPE_NOT_SPECIFIED:
break;
case SSL_TYPE_NONE: {
m_table->field[m_table_schema->ssl_type_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->ssl_cipher_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_issuer_idx()]->store(
"", 0, &my_charset_latin1);
m_table->field[m_table_schema->x509_subject_idx()]->store(
"", 0, &my_charset_latin1);
break;
default:
return true;
}
}
} else {
return true;
}
}
return false;
}
/**
Update user resource restrictions
@returns status of the operation
*/
bool Acl_table_user_writer::update_user_resources() {
if (m_what_to_update.m_what & RESOURCE_ATTR) {
USER_RESOURCES mqh = m_thd->lex->mqh;
if (mqh.specified_limits & USER_RESOURCES::QUERIES_PER_HOUR)
m_table->field[m_table_schema->max_questions_idx()]->store(
(longlong)mqh.questions, true);
if (mqh.specified_limits & USER_RESOURCES::UPDATES_PER_HOUR)
m_table->field[m_table_schema->max_updates_idx()]->store(
(longlong)mqh.updates, true);
if (mqh.specified_limits & USER_RESOURCES::CONNECTIONS_PER_HOUR)
m_table->field[m_table_schema->max_connections_idx()]->store(
(longlong)mqh.conn_per_hour, true);
if (m_table->s->fields >= 36 &&
(mqh.specified_limits & USER_RESOURCES::USER_CONNECTIONS))
m_table->field[m_table_schema->max_user_connections_idx()]->store(
(longlong)mqh.user_conn, true);
}
mqh_used = mqh_used || m_thd->lex->mqh.questions || m_thd->lex->mqh.updates ||
m_thd->lex->mqh.conn_per_hour;
return false;