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sql_user_table.cc
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/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include "table.h" /* TABLE_FIELD_TYPE */
#include "m_string.h" /* C_STRING_WITH_LEN */
#include "transaction.h" /* trans_commit_stmt */
/* trans_commit_implicit */
#include "sql_parse.h" /* stmt_causes_implicit_commit */
#include "sql_base.h" /* close_thread_tables */
#include "key.h" /* key_copy, key_cmp_if_same */
/* key_restore */
#include "log.h" /* sql_print_warning */
#include "rpl_filter.h" /* rpl_filter */
#include "sql_plugin.h" // plugin_is_ready
#include "auth_internal.h"
#include "sql_auth_cache.h"
#include "sql_user_table.h"
#include "sql_authentication.h"
#include "tztime.h"
#include "sql_time.h"
#include "crypt_genhash_impl.h" /* CRYPT_MAX_PASSWORD_SIZE */
static const
TABLE_FIELD_TYPE mysql_db_table_fields[MYSQL_DB_FIELD_COUNT] = {
{
{ C_STRING_WITH_LEN("Host") },
{ C_STRING_WITH_LEN("char(60)") },
{NULL, 0}
},
{
{ C_STRING_WITH_LEN("Db") },
{ C_STRING_WITH_LEN("char(64)") },
{NULL, 0}
},
{
{ C_STRING_WITH_LEN("User") },
{ C_STRING_WITH_LEN("char(16)") },
{NULL, 0}
},
{
{ C_STRING_WITH_LEN("Select_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Insert_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Update_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Delete_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Create_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Drop_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Grant_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("References_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Index_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Alter_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Create_tmp_table_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Lock_tables_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Create_view_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Show_view_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Create_routine_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Alter_routine_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Execute_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Event_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("Trigger_priv") },
{ C_STRING_WITH_LEN("enum('N','Y')") },
{ C_STRING_WITH_LEN("utf8") }
}
};
const TABLE_FIELD_DEF
mysql_db_table_def= {MYSQL_DB_FIELD_COUNT, mysql_db_table_fields};
#ifndef NO_EMBEDDED_ACCESS_CHECKS
/*
Get all access bits from table after fieldnr
IMPLEMENTATION
We know that the access privileges ends when there is no more fields
or the field is not an enum with two elements.
SYNOPSIS
get_access()
form an open table to read privileges from.
The record should be already read in table->record[0]
fieldnr number of the first privilege (that is ENUM('N','Y') field
next_field on return - number of the field next to the last ENUM
(unless next_field == 0)
RETURN VALUE
privilege mask
*/
ulong get_access(TABLE *form, uint fieldnr, uint *next_field)
{
ulong access_bits=0,bit;
char buff[2];
String res(buff,sizeof(buff),&my_charset_latin1);
Field **pos;
for (pos=form->field+fieldnr, bit=1;
*pos && (*pos)->real_type() == MYSQL_TYPE_ENUM &&
((Field_enum*) (*pos))->typelib->count == 2 ;
pos++, fieldnr++, bit<<=1)
{
(*pos)->val_str(&res);
if (my_toupper(&my_charset_latin1, res[0]) == 'Y')
access_bits|= bit;
}
if (next_field)
*next_field=fieldnr;
return access_bits;
}
/**
A helper function to commit statement transaction and close
ACL tables after reading some data from them as part of FLUSH
PRIVILEGES statement or during server initialization.
@note We assume that we have only read from the tables so commit
can't fail. @sa close_mysql_tables().
@note This function also rollbacks the transaction if rollback was
requested (e.g. as result of deadlock).
*/
void close_acl_tables(THD *thd)
{
/* Transaction rollback request by SE is unlikely. Still we handle it. */
if (thd->transaction_rollback_request)
{
trans_rollback_stmt(thd);
trans_rollback_implicit(thd);
}
else
{
#ifndef DBUG_OFF
bool res=
#endif
trans_commit_stmt(thd);
DBUG_ASSERT(res == false);
}
close_mysql_tables(thd);
}
/**
Commit ACL statement (and transaction) ignoring the fact that it might have
ended with an error, close tables which it has opened and release metadata
locks.
@note In case of failure to commit transaction we try to restore correct
state of in-memory structures by reloading privileges.
@retval False - Success.
@retval True - Error.
*/
bool acl_trans_commit_and_close_tables(THD *thd)
{
bool result;
bool rollback= false;
/*
Try to commit a transaction even if we had some failures.
Without this step changes to privilege tables will be rolled back at the
end of mysql_execute_command() in the presence of error, leaving on-disk
and in-memory descriptions of privileges out of sync and making behavior
of ACL statements for transactional tables incompatible with legacy
behavior.
We need to commit both statement and normal transaction to make behavior
consistent with both autocommit on and off.
It is safe to do so since ACL statement always do implicit commit at the
end of statement.
*/
DBUG_ASSERT(stmt_causes_implicit_commit(thd, CF_IMPLICIT_COMMIT_END));
if (thd->transaction_rollback_request)
{
/*
Transaction rollback request by SE is unlikely. Still let us
handle it and also do ACL reload if it happens.
*/
result= trans_rollback_stmt(thd);
result|= trans_rollback_implicit(thd);
rollback= true;
}
else
{
result= trans_commit_stmt(thd);
result|= trans_commit_implicit(thd);
}
close_thread_tables(thd);
thd->mdl_context.release_transactional_locks();
if (result || rollback)
{
/*
Try to bring in-memory structures back in sync with on-disk data if we
have failed to commit our changes.
*/
(void) acl_reload(thd);
(void) grant_reload(thd);
}
return result;
}
/**
Notify handlerton(s) that privileges have changed
Interested handlertons may use this notification to update
its own privilege structures as well as propagating
the changing query to other destinations.
*/
void acl_notify_htons(THD* thd, const char* query, size_t query_length)
{
DBUG_ENTER("acl_notify_htons");
DBUG_PRINT("enter", ("db: %s", thd->db().str));
DBUG_PRINT("enter", ("query: '%s', length: %zu", query, query_length));
ha_binlog_log_query(thd, NULL, LOGCOM_ACL_NOTIFY,
query, query_length,
thd->db().str, "");
DBUG_VOID_RETURN;
}
void get_grantor(THD *thd, char *grantor)
{
const char *user= thd->security_context()->user().str;
const char *host= thd->security_context()->host_or_ip().str;
#if defined(HAVE_REPLICATION)
if (thd->slave_thread && thd->has_invoker())
{
user= thd->get_invoker_user().str;
host= thd->get_invoker_host().str;
}
#endif
strxmov(grantor, user, "@", host, NullS);
}
/**
Update SSL properties in mysql.user table.
@param thd Thread context
@param tables table points to mysql.user table.
*/
void update_ssl_properties(THD *thd, TABLE *table)
{
LEX *lex= thd->lex;
switch (lex->ssl_type)
{
case SSL_TYPE_ANY:
table->field[MYSQL_USER_FIELD_SSL_TYPE]->store(STRING_WITH_LEN("ANY"),
&my_charset_latin1);
table->field[MYSQL_USER_FIELD_SSL_CIPHER]->
store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_ISSUER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_SUBJECT]->store("", 0, &my_charset_latin1);
break;
case SSL_TYPE_X509:
table->field[MYSQL_USER_FIELD_SSL_TYPE]->store(STRING_WITH_LEN("X509"),
&my_charset_latin1);
table->field[MYSQL_USER_FIELD_SSL_CIPHER]->
store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_ISSUER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_SUBJECT]->store("", 0, &my_charset_latin1);
break;
case SSL_TYPE_SPECIFIED:
table->field[MYSQL_USER_FIELD_SSL_TYPE]->store(STRING_WITH_LEN("SPECIFIED"),
&my_charset_latin1);
table->field[MYSQL_USER_FIELD_SSL_CIPHER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_ISSUER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_SUBJECT]->store("", 0, &my_charset_latin1);
if (lex->ssl_cipher)
table->field[MYSQL_USER_FIELD_SSL_CIPHER]->store(lex->ssl_cipher,
strlen(lex->ssl_cipher), system_charset_info);
if (lex->x509_issuer)
table->field[MYSQL_USER_FIELD_X509_ISSUER]->store(lex->x509_issuer,
strlen(lex->x509_issuer), system_charset_info);
if (lex->x509_subject)
table->field[MYSQL_USER_FIELD_X509_SUBJECT]->store(lex->x509_subject,
strlen(lex->x509_subject), system_charset_info);
break;
case SSL_TYPE_NOT_SPECIFIED:
break;
case SSL_TYPE_NONE:
table->field[MYSQL_USER_FIELD_SSL_TYPE]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_SSL_CIPHER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_ISSUER]->store("", 0, &my_charset_latin1);
table->field[MYSQL_USER_FIELD_X509_SUBJECT]->store("", 0, &my_charset_latin1);
break;
}
}
/**
Update user resources in mysql.user table.
@param tables table points to mysql.user table.
@param mqh user resourses to be updated
*/
void update_user_resource(TABLE *table, USER_RESOURCES *mqh)
{
if (mqh->specified_limits & USER_RESOURCES::QUERIES_PER_HOUR)
table->field[MYSQL_USER_FIELD_MAX_QUESTIONS]->
store((longlong) mqh->questions, TRUE);
if (mqh->specified_limits & USER_RESOURCES::UPDATES_PER_HOUR)
table->field[MYSQL_USER_FIELD_MAX_UPDATES]->
store((longlong) mqh->updates, TRUE);
if (mqh->specified_limits & USER_RESOURCES::CONNECTIONS_PER_HOUR)
table->field[MYSQL_USER_FIELD_MAX_CONNECTIONS]->
store((longlong) mqh->conn_per_hour, TRUE);
if (table->s->fields >= 36 &&
(mqh->specified_limits & USER_RESOURCES::USER_CONNECTIONS))
table->field[MYSQL_USER_FIELD_MAX_USER_CONNECTIONS]->
store((longlong) mqh->user_conn, TRUE);
}
int replace_user_table(THD *thd, TABLE *table, LEX_USER *combo,
ulong rights, bool revoke_grant,
bool can_create_user, ulong what_to_replace)
{
int error = -1;
bool old_row_exists=0;
bool builtin_plugin= true;
bool update_password= (what_to_replace & PLUGIN_ATTR);
char what= (revoke_grant) ? 'N' : 'Y';
uchar user_key[MAX_KEY_LENGTH];
LEX *lex= thd->lex;
LEX_CSTRING old_plugin;
struct timeval password_change_timestamp= {0, 0};
DBUG_ENTER("replace_user_table");
mysql_mutex_assert_owner(&acl_cache->lock);
if (!table->key_info)
{
my_error(ER_TABLE_CORRUPT, MYF(0), table->s->db.str,
table->s->table_name.str);
goto end;
}
table->use_all_columns();
DBUG_ASSERT(combo->host.str != NULL);
table->field[MYSQL_USER_FIELD_HOST]->store(combo->host.str,combo->host.length,
system_charset_info);
table->field[MYSQL_USER_FIELD_USER]->store(combo->user.str,combo->user.length,
system_charset_info);
key_copy(user_key, table->record[0], table->key_info,
table->key_info->key_length);
if (table->file->ha_index_read_idx_map(table->record[0], 0, user_key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))
{
/*
The user record wasn't found; if the intention was to revoke privileges
(indicated by what == 'N') then execution must fail now.
*/
if (what == 'N')
{
my_error(ER_NONEXISTING_GRANT, MYF(0), combo->user.str, combo->host.str);
goto end;
}
optimize_plugin_compare_by_pointer(&combo->plugin);
builtin_plugin= auth_plugin_is_built_in(combo->plugin.str);
if (!can_create_user)
{
my_error(ER_CANT_CREATE_USER_WITH_GRANT, MYF(0));
goto end;
}
if (thd->lex->sql_command == SQLCOM_GRANT)
{
/*
If NO_AUTO_CREATE_USER SQL mode is set and GRANT is not specified
with authentication information then report error
*/
if ((thd->variables.sql_mode & MODE_NO_AUTO_CREATE_USER) &&
(what_to_replace & DEFAULT_AUTH_ATTR))
{
my_error(ER_PASSWORD_NO_MATCH, MYF(0), combo->user.str, combo->host.str);
goto end;
}
push_warning(thd, Sql_condition::SL_WARNING, ER_WARN_DEPRECATED_SYNTAX,
"Using GRANT for creating new user is deprecated "
"and will be removed in future release. "
"Create new user with CREATE USER statement.");
}
old_row_exists = 0;
restore_record(table,s->default_values);
DBUG_ASSERT(combo->host.str != NULL);
table->field[MYSQL_USER_FIELD_HOST]->store(combo->host.str,combo->host.length,
system_charset_info);
table->field[MYSQL_USER_FIELD_USER]->store(combo->user.str,combo->user.length,
system_charset_info);
}
else // if (table->file->ha_index_read_idx_map [..]
{
/*
There is a matching user record ------------------------------------------
*/
old_row_exists = 1;
store_record(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(thd->mem_root, table->field[MYSQL_USER_FIELD_PLUGIN]);
if (old_plugin.str == NULL || *old_plugin.str == '\0')
{
my_error(ER_PASSWORD_NO_MATCH, MYF(0));
error= 1;
goto end;
}
/*
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 comparision of built-in plugin name */
optimize_plugin_compare_by_pointer(&old_plugin);
builtin_plugin= auth_plugin_is_built_in(old_plugin.str);
/* there is nothing to update */
if ((thd->lex->sql_command != SQLCOM_ALTER_USER) && !rights &&
lex->ssl_type == SSL_TYPE_NOT_SPECIFIED &&
!lex->mqh.specified_limits && !revoke_grant &&
(!builtin_plugin || !update_password))
{
DBUG_PRINT("info", ("Proxy user exit path"));
DBUG_RETURN(0);
}
/* GRANT will be used only to specify access rights for existing user */
if ((thd->lex->sql_command == SQLCOM_GRANT) &&
(what_to_replace & ~(DEFAULT_AUTH_ATTR | ACCESS_RIGHTS_ATTR)))
{
push_warning(thd, Sql_condition::SL_WARNING, ER_WARN_DEPRECATED_SYNTAX,
"Using GRANT statement to modify existing user's "
"properties other than privileges is deprecated and "
"will be removed in future release. "
"Use ALTER USER statement for this operation.");
}
}
if (what_to_replace & PLUGIN_ATTR ||
(what_to_replace & DEFAULT_AUTH_ATTR && !old_row_exists))
{
if (table->s->fields >= 41)
{
table->field[MYSQL_USER_FIELD_PLUGIN]->
store(combo->plugin.str, combo->plugin.length, system_charset_info);
table->field[MYSQL_USER_FIELD_PLUGIN]->set_notnull();
table->field[MYSQL_USER_FIELD_AUTHENTICATION_STRING]->
store(combo->auth.str, combo->auth.length, &my_charset_utf8_bin);
table->field[MYSQL_USER_FIELD_AUTHENTICATION_STRING]->set_notnull();
}
else
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), "plugin", "mysql.user");
goto end;
}
/* If we change user plugin then check if it is builtin plugin */
optimize_plugin_compare_by_pointer(&combo->plugin);
builtin_plugin= auth_plugin_is_built_in(combo->plugin.str);
/*
we update the password last changed field whenever there is change
in auth str and plugin is built in
*/
if (table->s->fields > MYSQL_USER_FIELD_PASSWORD_LAST_CHANGED)
{
if (builtin_plugin)
{
/*
Calculate time stamp up to seconds elapsed
from 1 Jan 1970 00:00:00.
*/
password_change_timestamp= thd->query_start_timeval_trunc(0);
table->field[MYSQL_USER_FIELD_PASSWORD_LAST_CHANGED]->store_timestamp
(&password_change_timestamp);
table->field[MYSQL_USER_FIELD_PASSWORD_LAST_CHANGED]->set_notnull();
}
}
else
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), "password_last_changed", "mysql.user");
goto end;
}
/* if we have a password supplied we update the expiration field */
if (table->s->fields > MYSQL_USER_FIELD_PASSWORD_EXPIRED)
{
if (auth_plugin_supports_expiration(combo->plugin.str))
table->field[MYSQL_USER_FIELD_PASSWORD_EXPIRED]->store("N",
1, system_charset_info);
}
else
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), "password_expired", "mysql.user");
goto end;
}
}
/* Update table columns with new privileges */
uint next_field;
if (what_to_replace & ACCESS_RIGHTS_ATTR)
{
Field **tmp_field;
ulong priv;
for (tmp_field= 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 & rights) // set requested privileges
(*tmp_field)->store(&what, 1, &my_charset_latin1);
}
}
rights= get_access(table, MYSQL_USER_FIELD_SELECT_PRIV, &next_field);
DBUG_PRINT("info",("table fields: %d",table->s->fields));
/* We write down SSL related ACL stuff */
if ((what_to_replace & SSL_ATTR) && (table->s->fields >= 31))
update_ssl_properties(thd, table);
next_field+=4;
if (what_to_replace & RESOURCE_ATTR)
update_user_resource(table, &lex->mqh);
mqh_used= mqh_used || lex->mqh.questions || lex->mqh.updates ||
lex->mqh.conn_per_hour;
next_field+= 4;
if (what_to_replace & PASSWORD_EXPIRE_ATTR)
{
/*
ALTER/CREATE USER <user> PASSWORD EXPIRE (or)
ALTER USER <user> IDENTIFIED WITH plugin
*/
if (combo->alter_status.update_password_expired_column)
{
if (table->s->fields > MYSQL_USER_FIELD_PASSWORD_EXPIRED)
{
table->field[MYSQL_USER_FIELD_PASSWORD_EXPIRED]->
store("Y", 1, system_charset_info);
}
else
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), "password_expired", "mysql.user");
goto end;
}
}
/*
If password_expired column is not to be updated and only
password_lifetime is to be updated
*/
if (table->s->fields > MYSQL_USER_FIELD_PASSWORD_LIFETIME &&
!combo->alter_status.update_password_expired_column)
{
if (!combo->alter_status.use_default_password_lifetime)
{
table->field[MYSQL_USER_FIELD_PASSWORD_LIFETIME]->
store((longlong) combo->alter_status.expire_after_days, TRUE);
table->field[MYSQL_USER_FIELD_PASSWORD_LIFETIME]->set_notnull();
}
else
table->field[MYSQL_USER_FIELD_PASSWORD_LIFETIME]->set_null();
}
}
if (what_to_replace & ACCOUNT_LOCK_ATTR)
{
if (!old_row_exists ||
(old_row_exists && combo->alter_status.update_account_locked_column))
{
if (table->s->fields > MYSQL_USER_FIELD_ACCOUNT_LOCKED)
{
/*
Update the field for a new row and for the row that exists and the
update was enforced (ACCOUNT [UNLOCK|LOCK]).
*/
table->field[MYSQL_USER_FIELD_ACCOUNT_LOCKED]->
store(combo->alter_status.account_locked ? "Y" : "N", 1,
system_charset_info);
}
else
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), "account_locked", "mysql.user");
goto end;
}
}
}
if (old_row_exists)
{
/*
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 (cmp_record(table,record[1]))
{
if ((error=
table->file->ha_update_row(table->record[1],table->record[0])) &&
error != HA_ERR_RECORD_IS_THE_SAME)
{ // This should never happen
table->file->print_error(error,MYF(0)); /* purecov: deadcode */
error= -1; /* purecov: deadcode */
goto end; /* purecov: deadcode */
}
else
error= 0;
}
}
else if ((error=table->file->ha_write_row(table->record[0]))) // insert
{ // This should never happen
if (!table->file->is_ignorable_error(error))
{
table->file->print_error(error,MYF(0)); /* purecov: deadcode */
error= -1; /* purecov: deadcode */
goto end; /* purecov: deadcode */
}
}
error=0; // Privileges granted / revoked
end:
if (!error)
{
/*
Convert the time when the password was changed from timeval
structure to MYSQL_TIME format, to store it in cache.
*/
MYSQL_TIME password_change_time;
if (builtin_plugin && (update_password || !old_row_exists))
thd->variables.time_zone->gmt_sec_to_TIME(&password_change_time,
(my_time_t)password_change_timestamp.tv_sec);
else
password_change_time.time_type= MYSQL_TIMESTAMP_ERROR;
acl_cache->clear(1); // Clear privilege cache
if (old_row_exists)
acl_update_user(combo->user.str, combo->host.str,
lex->ssl_type,
lex->ssl_cipher,
lex->x509_issuer,
lex->x509_subject,
&lex->mqh,
rights,
combo->plugin,
combo->auth,
password_change_time,
combo->alter_status,
what_to_replace);
else
acl_insert_user(combo->user.str, combo->host.str,
lex->ssl_type,
lex->ssl_cipher,
lex->x509_issuer,
lex->x509_subject,
&lex->mqh,
rights,
combo->plugin,
combo->auth,
password_change_time,
combo->alter_status);
}
DBUG_RETURN(error);
}
/*
change grants in the mysql.db table
*/
int replace_db_table(TABLE *table, const char *db,
const LEX_USER &combo,
ulong rights, bool revoke_grant)
{
uint i;
ulong priv,store_rights;
bool old_row_exists=0;
int error;
char what= (revoke_grant) ? 'N' : 'Y';
uchar user_key[MAX_KEY_LENGTH];
DBUG_ENTER("replace_db_table");
if (!initialized)
{
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--skip-grant-tables");
DBUG_RETURN(-1);
}
/* Check if there is such a user in user table in memory? */
if (!find_acl_user(combo.host.str,combo.user.str, FALSE))
{
my_message(ER_PASSWORD_NO_MATCH, ER(ER_PASSWORD_NO_MATCH), MYF(0));
DBUG_RETURN(-1);
}
table->use_all_columns();
table->field[0]->store(combo.host.str,combo.host.length,
system_charset_info);
table->field[1]->store(db, strlen(db), system_charset_info);
table->field[2]->store(combo.user.str,combo.user.length,
system_charset_info);
key_copy(user_key, table->record[0], table->key_info,
table->key_info->key_length);
if (table->file->ha_index_read_idx_map(table->record[0],0, user_key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))
{
if (what == 'N')
{ // no row, no revoke
my_error(ER_NONEXISTING_GRANT, MYF(0), combo.user.str, combo.host.str);
goto abort;
}
old_row_exists = 0;
restore_record(table, s->default_values);
table->field[0]->store(combo.host.str,combo.host.length,
system_charset_info);
table->field[1]->store(db, strlen(db), system_charset_info);
table->field[2]->store(combo.user.str,combo.user.length,
system_charset_info);
}
else
{
old_row_exists = 1;
store_record(table,record[1]);
}
store_rights=get_rights_for_db(rights);
for (i= 3, priv= 1; i < table->s->fields; i++, priv <<= 1)
{
if (priv & store_rights) // do it if priv is chosen
table->field [i]->store(&what,1, &my_charset_latin1);// set requested privileges
}
rights=get_access(table,3,0);
rights=fix_rights_for_db(rights);
if (old_row_exists)
{
/* update old existing row */
if (rights)
{
if ((error= table->file->ha_update_row(table->record[1],
table->record[0])) &&
error != HA_ERR_RECORD_IS_THE_SAME)
goto table_error; /* purecov: deadcode */
}
else /* must have been a revoke of all privileges */
{
if ((error= table->file->ha_delete_row(table->record[1])))
goto table_error; /* purecov: deadcode */
}
}
else if (rights && (error= table->file->ha_write_row(table->record[0])))
{
if (!table->file->is_ignorable_error(error))
goto table_error; /* purecov: deadcode */
}
acl_cache->clear(1); // Clear privilege cache
if (old_row_exists)
acl_update_db(combo.user.str,combo.host.str,db,rights);
else
if (rights)
acl_insert_db(combo.user.str,combo.host.str,db,rights);
DBUG_RETURN(0);
/* This could only happen if the grant tables got corrupted */
table_error:
table->file->print_error(error,MYF(0)); /* purecov: deadcode */
abort:
DBUG_RETURN(-1);
}
int replace_proxies_priv_table(THD *thd, TABLE *table, const LEX_USER *user,
const LEX_USER *proxied_user,
bool with_grant_arg, bool revoke_grant)
{
bool old_row_exists= 0;
int error;
uchar user_key[MAX_KEY_LENGTH];
ACL_PROXY_USER new_grant;
char grantor[USER_HOST_BUFF_SIZE];
DBUG_ENTER("replace_proxies_priv_table");
if (!initialized)
{
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--skip-grant-tables");
DBUG_RETURN(-1);
}
/* Check if there is such a user in user table in memory? */
if (!find_acl_user(user->host.str,user->user.str, FALSE))
{
my_message(ER_PASSWORD_NO_MATCH, ER(ER_PASSWORD_NO_MATCH), MYF(0));
DBUG_RETURN(-1);
}
table->use_all_columns();
Write_lock proxy_users_wlk(&proxy_users_rwlock);
ACL_PROXY_USER::store_pk (table, user->host, user->user,
proxied_user->host, proxied_user->user);
key_copy(user_key, table->record[0], table->key_info,
table->key_info->key_length);
get_grantor(thd, grantor);
if ((error= table->file->ha_index_init(0, 1)))
{
table->file->print_error(error, MYF(0));
DBUG_PRINT("info", ("ha_index_init error"));
DBUG_RETURN(-1);
}
if (table->file->ha_index_read_map(table->record[0], user_key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))
{
DBUG_PRINT ("info", ("Row not found"));
if (revoke_grant)
{ // no row, no revoke
my_error(ER_NONEXISTING_GRANT, MYF(0), user->user.str, user->host.str);
goto abort;
}
old_row_exists= 0;
restore_record(table, s->default_values);
ACL_PROXY_USER::store_data_record(table, user->host, user->user,
proxied_user->host,
proxied_user->user,
with_grant_arg,
grantor);
}
else
{
DBUG_PRINT("info", ("Row found"));
old_row_exists= 1;
ACL_PROXY_USER::store_with_grant(table, with_grant_arg);
store_record(table, record[1]);
}
if (old_row_exists)
{
/* update old existing row */
if (!revoke_grant)
{
if ((error= table->file->ha_update_row(table->record[1],
table->record[0])) &&
error != HA_ERR_RECORD_IS_THE_SAME)
goto table_error; /* purecov: inspected */
}
else
{
if ((error= table->file->ha_delete_row(table->record[1])))
goto table_error; /* purecov: inspected */
}
}
else if ((error= table->file->ha_write_row(table->record[0])))
{
DBUG_PRINT("info", ("error inserting the row"));
if (!table->file->is_ignorable_error(error))
goto table_error; /* purecov: inspected */
}
acl_cache->clear(1); // Clear privilege cache
if (old_row_exists)
{
new_grant.init(user->host.str, user->user.str,
proxied_user->host.str, proxied_user->user.str,
with_grant_arg);
acl_update_proxy_user(&new_grant, revoke_grant);
}
else
{
new_grant.init(&global_acl_memory, user->host.str, user->user.str,
proxied_user->host.str, proxied_user->user.str,
with_grant_arg);
acl_insert_proxy_user(&new_grant);
}
table->file->ha_index_end();
DBUG_RETURN(0);
/* This could only happen if the grant tables got corrupted */
table_error:
DBUG_PRINT("info", ("table error"));
table->file->print_error(error, MYF(0)); /* purecov: inspected */
abort:
DBUG_PRINT("info", ("aborting replace_proxies_priv_table"));
table->file->ha_index_end();
DBUG_RETURN(-1);
}