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/* Copyright (c) 2000, 2012, Oracle and/or its affiliates.
Copyright (c) 2012, 2020, MariaDB Corporation.
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 */
/*
* Vio Lite.
* Purpose: include file for Vio that will work with C and C++
*/
#ifndef vio_violite_h_
#define vio_violite_h_
#include "my_net.h" /* needed because of struct in_addr */
#include <mysql/psi/mysql_socket.h>
/* Simple vio interface in C; The functions are implemented in violite.c */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifdef __cplusplus
typedef struct st_vio Vio;
#endif /* __cplusplus */
enum enum_vio_type
{
VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET, VIO_TYPE_NAMEDPIPE,
VIO_TYPE_SSL
/* see also vio_type_names[] */
};
enum enum_vio_state
{
VIO_STATE_NOT_INITIALIZED, VIO_STATE_ACTIVE, VIO_STATE_SHUTDOWN,
VIO_STATE_CLOSED
};
#define FIRST_VIO_TYPE VIO_CLOSED
#define LAST_VIO_TYPE VIO_TYPE_SSL
/**
VIO I/O events.
*/
enum enum_vio_io_event
{
VIO_IO_EVENT_READ,
VIO_IO_EVENT_WRITE,
VIO_IO_EVENT_CONNECT
};
struct vio_keepalive_opts
{
int interval;
int idle;
int probes;
};
#define VIO_TLSv1_0 1
#define VIO_TLSv1_1 2
#define VIO_TLSv1_2 4
#define VIO_TLSv1_3 8
#define VIO_LOCALHOST 1U /* a localhost connection */
#define VIO_BUFFERED_READ 2U /* use buffered read */
#define VIO_READ_BUFFER_SIZE 16384U /* size of read buffer */
#define VIO_DESCRIPTION_SIZE 30 /* size of description */
Vio* vio_new(my_socket sd, enum enum_vio_type type, uint flags);
Vio* mysql_socket_vio_new(MYSQL_SOCKET mysql_socket, enum enum_vio_type type, uint flags);
#ifdef _WIN32
Vio* vio_new_win32pipe(HANDLE hPipe);
#else
#define HANDLE void *
#endif /* _WIN32 */
void vio_delete(Vio* vio);
int vio_close(Vio* vio);
my_bool vio_reset(Vio* vio, enum enum_vio_type type,
my_socket sd, void *ssl, uint flags);
size_t vio_read(Vio *vio, uchar * buf, size_t size);
size_t vio_read_buff(Vio *vio, uchar * buf, size_t size);
size_t vio_write(Vio *vio, const uchar * buf, size_t size);
int vio_blocking(Vio *vio, my_bool onoff, my_bool *old_mode);
my_bool vio_is_blocking(Vio *vio);
/* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible */
int vio_nodelay(Vio *vio, my_bool on);
int vio_fastsend(Vio *vio);
/* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible */
int vio_keepalive(Vio *vio, my_bool onoff);
int vio_set_keepalive_options(Vio * vio, const struct vio_keepalive_opts *opts);
/* Whenever we should retry the last read/write operation. */
my_bool vio_should_retry(Vio *vio);
/* Check that operation was timed out */
my_bool vio_was_timeout(Vio *vio);
/* Short text description of the socket for those, who are curious.. */
const char* vio_description(Vio *vio);
/* Return the type of the connection */
enum enum_vio_type vio_type(Vio* vio);
/* Return last error number */
int vio_errno(Vio*vio);
/* Get socket number */
my_socket vio_fd(Vio*vio);
/* Remote peer's address and name in text form */
my_bool vio_peer_addr(Vio *vio, char *buf, uint16 *port, size_t buflen);
/* Wait for an I/O event notification. */
int vio_io_wait(Vio *vio, enum enum_vio_io_event event, int timeout);
my_bool vio_is_connected(Vio *vio);
ssize_t vio_pending(Vio *vio);
/* Set timeout for a network operation. */
extern int vio_timeout(Vio *vio, uint which, int timeout_sec);
extern void vio_set_wait_callback(void (*before_wait)(void),
void (*after_wait)(void));
/* Connect to a peer. */
my_bool vio_socket_connect(Vio *vio, struct sockaddr *addr, socklen_t len,
int timeout);
void vio_get_normalized_ip(const struct sockaddr *src, size_t src_length, struct sockaddr *dst);
my_bool vio_get_normalized_ip_string(const struct sockaddr *addr, size_t addr_length,
char *ip_string, size_t ip_string_size);
my_bool vio_is_no_name_error(int err_code);
int vio_getnameinfo(const struct sockaddr *sa,
char *hostname, size_t hostname_size,
char *port, size_t port_size,
int flags);
#ifdef HAVE_OPENSSL
/* apple deprecated openssl in MacOSX Lion */
#ifdef __APPLE__
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
#define HEADER_DES_LOCL_H dummy_something
#define YASSL_MYSQL_COMPATIBLE
#ifndef YASSL_PREFIX
#define YASSL_PREFIX
#endif
/* Set yaSSL to use same type as MySQL do for socket handles */
typedef my_socket YASSL_SOCKET_T;
#define YASSL_SOCKET_T_DEFINED
#define template _template /* bug in WolfSSL 4.4.0, see also my_crypt.cc */
#include <openssl/ssl.h>
#undef template
#include <openssl/err.h>
#ifdef DEPRECATED
#undef DEPRECATED
#endif
enum enum_ssl_init_error
{
SSL_INITERR_NOERROR= 0, SSL_INITERR_CERT, SSL_INITERR_KEY,
SSL_INITERR_NOMATCH, SSL_INITERR_BAD_PATHS, SSL_INITERR_CIPHERS,
SSL_INITERR_MEMFAIL, SSL_INITERR_DH, SSL_INITERR_PROTOCOL,
SSL_INITERR_LASTERR
};
const char* sslGetErrString(enum enum_ssl_init_error err);
struct st_VioSSLFd
{
SSL_CTX *ssl_context;
};
int sslaccept(struct st_VioSSLFd*, Vio *, long timeout, unsigned long *errptr);
int sslconnect(struct st_VioSSLFd*, Vio *, long timeout, unsigned long *errptr);
void vio_check_ssl_init();
struct st_VioSSLFd
*new_VioSSLConnectorFd(const char *key_file, const char *cert_file,
const char *ca_file, const char *ca_path,
const char *cipher, enum enum_ssl_init_error *error,
const char *crl_file, const char *crl_path);
struct st_VioSSLFd
*new_VioSSLAcceptorFd(const char *key_file, const char *cert_file,
const char *ca_file,const char *ca_path,
const char *cipher, enum enum_ssl_init_error *error,
const char *crl_file, const char *crl_path,
ulonglong tls_version);
void free_vio_ssl_acceptor_fd(struct st_VioSSLFd *fd);
#endif /* HAVE_OPENSSL */
void vio_end(void);
const char *vio_type_name(enum enum_vio_type vio_type, size_t *len);
#ifdef __cplusplus
}
#endif
#if !defined(DONT_MAP_VIO)
#define vio_delete(vio) (vio)->viodelete(vio)
#define vio_errno(vio) (vio)->vioerrno(vio)
#define vio_read(vio, buf, size) ((vio)->read)(vio,buf,size)
#define vio_write(vio, buf, size) ((vio)->write)(vio, buf, size)
#define vio_blocking(vio, set_blocking_mode, old_mode)\
(vio)->vioblocking(vio, set_blocking_mode, old_mode)
#define vio_is_blocking(vio) (vio)->is_blocking(vio)
#define vio_fastsend(vio) (vio)->fastsend(vio)
#define vio_keepalive(vio, set_keep_alive) (vio)->viokeepalive(vio, set_keep_alive)
#define vio_should_retry(vio) (vio)->should_retry(vio)
#define vio_was_timeout(vio) (vio)->was_timeout(vio)
#define vio_close(vio) ((vio)->vioclose)(vio)
#define vio_shutdown(vio,how) ((vio)->shutdown)(vio,how)
#define vio_peer_addr(vio, buf, prt, buflen) (vio)->peer_addr(vio, buf, prt, buflen)
#define vio_io_wait(vio, event, timeout) (vio)->io_wait(vio, event, timeout)
#define vio_is_connected(vio) (vio)->is_connected(vio)
#endif /* !defined(DONT_MAP_VIO) */
#ifdef _WIN32
/* shutdown(2) flags */
#ifndef SHUT_RD
#define SHUT_RD SD_RECEIVE
#endif
#endif
/* This enumerator is used in parser - should be always visible */
enum SSL_type
{
SSL_TYPE_NOT_SPECIFIED= -1,
SSL_TYPE_NONE,
SSL_TYPE_ANY,
SSL_TYPE_X509,
SSL_TYPE_SPECIFIED
};
/* HFTODO - hide this if we don't want client in embedded server */
/* This structure is for every connection on both sides */
struct st_vio
{
MYSQL_SOCKET mysql_socket; /* Instrumented socket */
my_bool localhost; /* Are we from localhost? */
int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
struct sockaddr_storage local; /* Local internet address */
struct sockaddr_storage remote; /* Remote internet address */
enum enum_vio_type type; /* Type of connection */
enum enum_vio_state state; /* State of the connection */
const char *desc; /* String description */
char *read_buffer; /* buffer for vio_read_buff */
char *read_pos; /* start of unfetched data in the
read buffer */
char *read_end; /* end of unfetched data */
int read_timeout; /* Timeout value (ms) for read ops. */
int write_timeout; /* Timeout value (ms) for write ops. */
/* function pointers. They are similar for socket/SSL/whatever */
void (*viodelete)(Vio*);
int (*vioerrno)(Vio*);
size_t (*read)(Vio*, uchar *, size_t);
size_t (*write)(Vio*, const uchar *, size_t);
int (*timeout)(Vio*, uint, my_bool);
int (*vioblocking)(Vio*, my_bool, my_bool *);
my_bool (*is_blocking)(Vio*);
int (*viokeepalive)(Vio*, my_bool);
int (*fastsend)(Vio*);
my_bool (*peer_addr)(Vio*, char *, uint16*, size_t);
void (*in_addr)(Vio*, struct sockaddr_storage*);
my_bool (*should_retry)(Vio*);
my_bool (*was_timeout)(Vio*);
int (*vioclose)(Vio*);
my_bool (*is_connected)(Vio*);
int (*shutdown)(Vio *, int);
my_bool (*has_data) (Vio*);
int (*io_wait)(Vio*, enum enum_vio_io_event, int);
my_bool (*connect)(Vio*, struct sockaddr *, socklen_t, int);
#ifdef HAVE_OPENSSL
void *ssl_arg;
#endif
#ifdef _WIN32
HANDLE hPipe;
OVERLAPPED overlapped;
int shutdown_flag;
void *tp_ctx; /* threadpool context */
#endif
};
#endif /* vio_violite_h_ */