/* Copyright (C) 2013-2015 Codership Oy <info@codership.com>
Copyright ( C ) 2025 - 2026 MariaDB
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 Street, Fifth Floor, Boston, MA 02110-1335 USA. */
#ifndef WSREP_UTILS_H
#define WSREP_UTILS_H
#include "wsrep_priv.h"
#include "wsrep_mysqld.h"
unsigned int wsrep_check_ip (const char * const addr, bool *is_ipv6);
size_t wsrep_guess_ip (char * buf, size_t buf_len);
namespace wsp {
class node_status
{
public :
node_status() : status(wsrep::server_state::s_disconnected) {}
void set(enum wsrep::server_state::state new_status,
const wsrep::view* view= 0 )
{
if (status != new_status || 0 != view)
{
wsrep_notify_status(new_status, view);
status= new_status;
}
}
enum wsrep::server_state::state get() const { return status; }
private :
enum wsrep::server_state::state status;
};
} /* namespace wsp */
extern wsp::node_status local_status;
/* returns the length of the host part of the address string */
size_t wsrep_host_len(const char * addr, size_t addr_len);
namespace wsp {
class Address {
public :
Address()
: m_address_len(0 ), m_family(UNSPEC), m_port(0 ), m_valid(false )
{
memset(m_address, 0 , sizeof (m_address));
}
Address(const char *addr_in)
: m_address_len(0 ), m_family(UNSPEC), m_port(0 ), m_valid(false )
{
memset(m_address, 0 , sizeof (m_address));
parse_addr(addr_in);
}
bool is_valid() { return m_valid; }
bool is_ipv6() { return (m_family == INET6); }
const char * get_address() { return m_address; }
size_t get_address_len() { return m_address_len; }
int get_port() { return m_port; }
void set_port(int port) { m_port= port; }
private :
enum family {
UNSPEC= 0 ,
INET, /* IPv4 */
INET6, /* IPv6 */
};
char m_address[256 ];
size_t m_address_len;
family m_family;
int m_port;
bool m_valid;
void parse_addr(const char *addr_in) {
const char *start;
const char *end;
const char *port;
const char * open_bracket= strchr(const_cast <char *>(addr_in), '[' );
const char * close_bracket= strchr(const_cast <char *>(addr_in), ']' );
const char * colon= strchr(const_cast <char *>(addr_in), ':' );
const char * dot= strchr(const_cast <char *>(addr_in), '.' );
int cc= colon_count(addr_in);
if (open_bracket != NULL ||
dot == NULL ||
(colon != NULL && (dot == NULL || colon < dot)))
{
// This could be an IPv6 address or a hostname
if (open_bracket != NULL) {
/* Sanity check: Address with '[' must include ']' */
if (close_bracket == NULL &&
open_bracket < close_bracket) /* Error: malformed address */
{
m_valid= false ;
return ;
}
start= open_bracket + 1 ;
end= close_bracket;
/* Check for port */
port= strchr(close_bracket, ':' );
if ((port != NULL) && parse_port(port + 1 ))
{
return ; /* Error: invalid port */
}
m_family= INET6;
}
else
{
switch (cc) {
case 0 :
/* Hostname with no port */
start= addr_in;
end= addr_in + strlen(addr_in);
break ;
case 1 :
/* Hostname with port (host:port) */
start= addr_in;
end= colon;
if (parse_port(colon + 1 ))
return ; /* Error: invalid port */
break ;
default :
/* IPv6 address */
start= addr_in;
end= addr_in + strlen(addr_in);
m_family= INET6;
break ;
}
}
} else { /* IPv4 address or hostname */
start= addr_in;
if (colon != NULL) { /* Port */
end= colon;
if (parse_port(colon + 1 ))
return ; /* Error: invalid port */
} else {
end= addr_in + strlen(addr_in);
}
}
size_t len= end - start;
/* Safety */
if (len >= sizeof (m_address))
{
// The supplied address is too large to fit into the internal buffer.
m_valid= false ;
return ;
}
memcpy(m_address, start, len);
m_address[len]= '\0' ;
m_address_len= ++ len;
m_valid= true ;
return ;
}
int colon_count(const char *addr) {
int count= 0 , i= 0 ;
while (addr[i] != '\0' )
{
if (addr[i] == ':' ) ++count;
++ i;
}
return count;
}
bool parse_port(const char *port) {
errno= 0 ; /* Reset the errno */
m_port= strtol(port, NULL, 10 );
if (errno == EINVAL || errno == ERANGE)
{
m_port= 0 ; /* Error: invalid port */
m_valid= false ;
return true ;
}
return false ;
}
};
class Config_state
{
public :
Config_state() : view_(), status_(wsrep::server_state::s_disconnected)
{}
void set(const wsrep::view& view)
{
wsrep_notify_status(status_, &view);
lock();
view_= view;
unlock();
}
void set(enum wsrep::server_state::state status)
{
if (status == wsrep::server_state::s_donor ||
status == wsrep::server_state::s_synced)
wsrep_notify_status(status, &view_);
else
wsrep_notify_status(status);
lock();
status_= status;
unlock();
}
const wsrep::view& get_view_info() const
{
return view_;
}
enum wsrep::server_state::state get_status() const
{
return status_;
}
int lock()
{
return mysql_mutex_lock(&LOCK_wsrep_config_state);
}
int unlock()
{
return mysql_mutex_unlock(&LOCK_wsrep_config_state);
}
private :
wsrep::view view_;
enum wsrep::server_state::state status_;
};
} /* namespace wsp */
extern wsp::Config_state *wsrep_config_state;
namespace wsp {
/* a class to manage env vars array */
class env
{
private :
size_t len_;
char ** env_;
int errno_;
bool ctor_common(char ** e);
void dtor();
env& operator =(env);
public :
explicit env(char ** env);
explicit env(const env&);
~env();
int append(const char * var); /* add a new env. var */
int error() const { return errno_; }
char ** operator ()() { return env_; }
};
/* A small class to run external programs. */
class process
{
private :
const char * const str_;
FILE* io_[2 ];
int err_;
pid_t pid_;
enum io_direction { READ, WRITE };
void setup_parent_pipe_end(io_direction direction,
int pipe_fds[],
int const pipe_end,
const char * const mode);
void close_io(io_direction direction, bool warn = false );
public :
/*! @arg type is a pointer to a null-terminated string which must be
either " r " , " w " or " rw "
@ arg env optional null - terminated vector of environment variables
*/
process (const char * cmd, const char * type, char ** env);
~process ();
FILE* from () { return io_[READ]; }
FILE* to () { return io_[WRITE]; }
void close_to() { close_io(WRITE, false ); }
int error() { return err_; }
int wait ();
const char * cmd() { return str_; }
};
class thd
{
/* Helper class to init/deinit current thread for use with THD */
class my_init
{
public :
my_bool const init_;
int const err_;
my_init(my_bool const init) :
init_(init),
err_(init_ ? my_thread_init() : 0 )
{}
~my_init() {
if (init_ && !err_) my_thread_end();
}
}
init;
thd (const thd&);
thd& operator = (const thd&);
public :
/*
@ param [ in ] init Should be set to true if called in a freshly forked
thread to initialize MySQL - specific thread context
and likewise deinitialize on object destruction .
Should be set to false if the thread already has
initialized the context , but original THD * is not
available .
*/
explicit thd(my_bool init=true , bool system_thread=false );
~thd();
int err() const { return init.err_; }
THD* const ptr;
};
/* local server connection */
class mysql
{
MYSQL* mysql_;
public :
mysql();
~mysql();
int execute(const std::string& query) {
if (mysql_real_query(mysql_, query.c_str(), query.length())) {
return mysql_errno(mysql_);
}
return 0 ;
}
int errnum() {
return (mysql_errno(mysql_));
}
const char * errstr() {
return mysql_error(mysql_);
}
int disable_replication();
};
class string
{
public :
string() : string_(0 ) {}
explicit string(size_t s) : string_(static_cast <char *>(malloc(s))) {}
char * operator ()() { return string_; }
void set(char * str) { if (string_) free (string_); string_= str; }
~string() { set (0 ); }
private :
char * string_;
};
/* scope level lock */
class auto_lock
{
public :
auto_lock(mysql_mutex_t* m) : m_(m) { mysql_mutex_lock(m_); }
~auto_lock() { mysql_mutex_unlock(m_); }
private :
mysql_mutex_t& operator =(mysql_mutex_t&);
mysql_mutex_t* const m_;
};
#ifdef REMOVED
class lock
{
pthread_mutex_t* const mtx_;
public :
lock (pthread_mutex_t* mtx) : mtx_(mtx)
{
int err= pthread_mutex_lock (mtx_);
if (err)
{
WSREP_ERROR("Mutex lock failed: %s" , strerror(err));
abort();
}
}
virtual ~lock ()
{
int err= pthread_mutex_unlock (mtx_);
if (err)
{
WSREP_ERROR("Mutex unlock failed: %s" , strerror(err));
abort();
}
}
inline void wait (pthread_cond_t* cond)
{
pthread_cond_wait (cond, mtx_);
}
private :
lock (const lock&);
lock& operator =(const lock&);
};
class monitor
{
int mutable refcnt;
pthread_mutex_t mutable mtx;
pthread_cond_t mutable cond;
public :
monitor() : refcnt(0 )
{
pthread_mutex_init (&mtx, NULL);
pthread_cond_init (&cond, NULL);
}
~monitor()
{
pthread_mutex_destroy (&mtx);
pthread_cond_destroy (&cond);
}
void enter() const
{
lock l(&mtx);
while (refcnt)
{
l.wait(&cond);
}
refcnt++;
}
void leave() const
{
lock l(&mtx);
refcnt--;
if (refcnt == 0 )
{
pthread_cond_signal (&cond);
}
}
private :
monitor (const monitor&);
monitor& operator = (const monitor&);
};
class critical
{
const monitor& mon;
public :
critical(const monitor& m) : mon(m) { mon.enter(); }
~critical() { mon.leave(); }
private :
critical (const critical&);
critical& operator = (const critical&);
};
#endif
} // namespace wsrep
// Functions to validate dynamic variable safety
bool wsrep_filename_char(const unsigned char c);
bool wsrep_comma_char(const unsigned char c);
bool wsrep_address_char(const unsigned char c);
bool wsrep_names_list(const unsigned char c);
bool wsrep_check_request_str(const char * const str,
bool (*check) (const unsigned char ),
bool log_warn = true );
#endif /* WSREP_UTILS_H */
Messung V0.5 in Prozent C=94 H=99 G=96
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-08)
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