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merge

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This commit is contained in:
monty@mashka.mysql.fi
2003-05-22 02:57:27 +03:00
parent 8d52377a5c 6aa8929cf3
commit cb7061ebe4
333 changed files with 7208 additions and 3874 deletions
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133
sql/sql_parse.cc
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@ -213,7 +213,15 @@ static int check_user(THD *thd,enum_server_command command, const char *user,
thd->db=0;
thd->db_length=0;
USER_RESOURCES ur;
char tmp_passwd[SCRAMBLE41_LENGTH];
DBUG_ENTER("check_user");
/*
Move password to temporary buffer as it may be stored in communication
buffer
*/
strmake(tmp_passwd, passwd, sizeof(tmp_passwd));
passwd= tmp_passwd; // Use local copy
/* We shall avoid dupplicate user allocations here */
if (!thd->user && !(thd->user = my_strdup(user, MYF(0))))
@ -222,7 +230,8 @@ static int check_user(THD *thd,enum_server_command command, const char *user,
DBUG_RETURN(1);
}
thd->master_access=acl_getroot(thd, thd->host, thd->ip, thd->user,
passwd, thd->scramble, &thd->priv_user,
passwd, thd->scramble,
&thd->priv_user, thd->priv_host,
(protocol_version == 9 ||
!(thd->client_capabilities &
CLIENT_LONG_PASSWORD)),
@ -230,9 +239,9 @@ static int check_user(THD *thd,enum_server_command command, const char *user,
cur_priv_version,hint_user);
DBUG_PRINT("info",
("Capabilities: %d packet_length: %ld Host: '%s' User: '%s' Using password: %s Access: %u db: '%s'",
("Capabilities: %d packet_length: %ld Host: '%s' Login user: '%s' Priv_user: '%s' Using password: %s Access: %u db: '%s'",
thd->client_capabilities, thd->max_client_packet_length,
thd->host_or_ip, thd->priv_user,
thd->host_or_ip, thd->user, thd->priv_user,
had_password ? "yes": "no",
thd->master_access, thd->db ? thd->db : "*none*"));
@ -307,6 +316,7 @@ static int check_user(THD *thd,enum_server_command command, const char *user,
DBUG_RETURN(error);
}
send_ok(thd); // Ready to handle questions
thd->password= test(passwd[0]); // Remember for error messages
DBUG_RETURN(0); // ok
}
@ -582,7 +592,6 @@ check_connections(THD *thd)
DBUG_PRINT("info",("Host: %s",thd->host));
thd->host_or_ip= thd->host;
thd->ip= 0;
thd->peer_port= 0;
bzero((char*) &thd->remote,sizeof(struct sockaddr));
}
/* Ensure that wrong hostnames doesn't cause buffer overflows */
@ -751,7 +760,6 @@ check_connections(THD *thd)
}
else if (res)
return -1; // Error sent from check_user()
thd->password=using_password;
return 0;
}
@ -1551,7 +1559,8 @@ bool alloc_query(THD *thd, char *packet, ulong packet_length)
/* We must allocate some extra memory for query cache */
if (!(thd->query= (char*) thd->memdup_w_gap((gptr) (packet),
packet_length,
thd->db_length+2)))
thd->db_length+2+
sizeof(ha_rows))))
return 1;
thd->query[packet_length]=0;
thd->query_length= packet_length;
@ -1648,6 +1657,18 @@ mysql_execute_command(THD *thd)
#endif
)
DBUG_VOID_RETURN;
/*
When option readonly is set deny operations which change tables.
Except for the replication thread and the 'super' users.
*/
if (opt_readonly &&
!(thd->slave_thread || (thd->master_access & SUPER_ACL)) &&
(uc_update_queries[lex->sql_command] > 0))
{
send_error(thd, ER_CANT_UPDATE_WITH_READLOCK);
DBUG_VOID_RETURN;
}
statistic_increment(com_stat[lex->sql_command],&LOCK_status);
switch (lex->sql_command) {
@ -1832,7 +1853,8 @@ mysql_execute_command(THD *thd)
}
case SQLCOM_SHOW_SLAVE_STAT:
{
if (check_global_access(thd, SUPER_ACL))
/* Accept one of two privileges */
if (check_global_access(thd, SUPER_ACL | REPL_CLIENT_ACL))
goto error;
LOCK_ACTIVE_MI;
res = show_master_info(thd,active_mi);
@ -1841,7 +1863,8 @@ mysql_execute_command(THD *thd)
}
case SQLCOM_SHOW_MASTER_STAT:
{
if (check_global_access(thd, SUPER_ACL))
/* Accept one of two privileges */
if (check_global_access(thd, SUPER_ACL | REPL_CLIENT_ACL))
goto error;
res = show_binlog_info(thd);
break;
@ -3058,12 +3081,21 @@ error:
/****************************************************************************
Get the user (global) and database privileges for all used tables
Returns true (error) if we can't get the privileges and we don't use
table/column grants.
The idea of EXTRA_ACL is that one will be granted access to the table if
one has the asked privilege on any column combination of the table; For
example to be able to check a table one needs to have SELECT privilege on
any column of the table.
NOTES
The idea of EXTRA_ACL is that one will be granted access to the table if
one has the asked privilege on any column combination of the table; For
example to be able to check a table one needs to have SELECT privilege on
any column of the table.
RETURN
0 ok
1 If we can't get the privileges and we don't use table/column grants.
save_priv In this we store global and db level grants for the table
Note that we don't store db level grants if the global grants
is enough to satisfy the request and the global grants contains
a SELECT grant.
****************************************************************************/
bool
@ -3088,7 +3120,17 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
if ((thd->master_access & want_access) == want_access)
{
*save_priv=thd->master_access;
/*
If we don't have a global SELECT privilege, we have to get the database
specific access rights to be able to handle queries of type
UPDATE t1 SET a=1 WHERE b > 0
*/
db_access= thd->db_access;
if (!(thd->master_access & SELECT_ACL) &&
(db && (!thd->db || strcmp(db,thd->db))))
db_access=acl_get(thd->host, thd->ip, (char*) &thd->remote.sin_addr,
thd->priv_user, db); /* purecov: inspected */
*save_priv=thd->master_access | db_access;
DBUG_RETURN(FALSE);
}
if (((want_access & ~thd->master_access) & ~(DB_ACLS | EXTRA_ACL)) ||
@ -3097,7 +3139,7 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
if (!no_errors)
net_printf(thd,ER_ACCESS_DENIED_ERROR,
thd->priv_user,
thd->host_or_ip,
thd->priv_host,
thd->password ? ER(ER_YES) : ER(ER_NO));/* purecov: tested */
DBUG_RETURN(TRUE); /* purecov: tested */
}
@ -3122,18 +3164,35 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
if (!no_errors)
net_printf(thd,ER_DBACCESS_DENIED_ERROR,
thd->priv_user,
thd->host_or_ip,
thd->priv_host,
db ? db : thd->db ? thd->db : "unknown"); /* purecov: tested */
DBUG_RETURN(TRUE); /* purecov: tested */
}
/* check for global access and give descriptive error message if it fails */
/*
check for global access and give descriptive error message if it fails
SYNOPSIS
check_global_access()
thd Thread handler
want_access Use should have any of these global rights
WARNING
One gets access rigth if one has ANY of the rights in want_access
This is useful as one in most cases only need one global right,
but in some case we want to check if the user has SUPER or
REPL_CLIENT_ACL rights.
RETURN
0 ok
1 Access denied. In this case an error is sent to the client
*/
bool check_global_access(THD *thd, ulong want_access)
{
char command[128];
if ((thd->master_access & want_access) == want_access)
if ((thd->master_access & want_access))
return 0;
get_privilege_desc(command, sizeof(command), want_access);
net_printf(thd,ER_SPECIFIC_ACCESS_DENIED_ERROR,
@ -3237,6 +3296,7 @@ static bool check_merge_table_access(THD *thd, char *db,
#define used_stack(A,B) (long) (B - A)
#endif
#ifndef EMBEDDED_LIBRARY
bool check_stack_overrun(THD *thd,char *buf __attribute__((unused)))
{
long stack_used;
@ -3250,6 +3310,7 @@ bool check_stack_overrun(THD *thd,char *buf __attribute__((unused)))
}
return 0;
}
#endif /* EMBEDDED_LIBRARY */
#define MY_YACC_INIT 1000 // Start with big alloc
#define MY_YACC_MAX 32000 // Because of 'short'
@ -3548,9 +3609,8 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
new_field->comment.str= (char*) comment->str_value.ptr();
new_field->comment.length=comment->str_value.length();
}
if (length)
if (!(new_field->length= (uint) atoi(length)))
length=0; /* purecov: inspected */
if (length && !(new_field->length= (uint) atoi(length)))
length=0; /* purecov: inspected */
uint sign_len=type_modifier & UNSIGNED_FLAG ? 0 : 1;
if (new_field->length && new_field->decimals &&
@ -3583,10 +3643,13 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
break;
case FIELD_TYPE_DECIMAL:
if (!length)
new_field->length = 10; // Default length for DECIMAL
new_field->length+=sign_len;
if (new_field->decimals)
new_field->length++;
new_field->length= 10; // Default length for DECIMAL
if (new_field->length < MAX_FIELD_WIDTH) // Skip wrong argument
{
new_field->length+=sign_len;
if (new_field->decimals)
new_field->length++;
}
break;
case FIELD_TYPE_STRING:
case FIELD_TYPE_VAR_STRING:
@ -4012,6 +4075,24 @@ void add_join_on(TABLE_LIST *b,Item *expr)
}
/*
Mark that we have a NATURAL JOIN between two tables
SYNOPSIS
add_join_natural()
a Table to do normal join with
b Do normal join with this table
IMPLEMENTATION
This function just marks that table b should be joined with a.
The function setup_cond() will create in b->on_expr a list
of equal condition between all fields of the same name.
SELECT * FROM t1 NATURAL LEFT JOIN t2
<=>
SELECT * FROM t1 LEFT JOIN t2 ON (t1.i=t2.i and t1.j=t2.j ... )
*/
void add_join_natural(TABLE_LIST *a,TABLE_LIST *b)
{
b->natural_join=a;