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/* Copyright (C) 2000 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
Note that we can't have assertion on file descriptors; The reason for
this is that during mysql shutdown, another thread can close a file
we are working on. In this case we should just return read errors from
the file descriptior.
*/
#include "vio_priv.h"
#ifdef HAVE_OPENSSL
#ifdef __NETWARE__
/* yaSSL already uses BSD sockets */
#ifndef HAVE_YASSL
/*
The default OpenSSL implementation on NetWare uses WinSock.
This code allows us to use the BSD sockets.
*/
static int SSL_set_fd_bsd(SSL *s, int fd)
{
int result= -1;
BIO_METHOD *BIO_s_bsdsocket();
BIO *bio;
if ((bio= BIO_new(BIO_s_bsdsocket())))
{
result= BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set_bio(s, bio, bio);
}
return result;
}
#define SSL_set_fd(A, B) SSL_set_fd_bsd((A), (B))
#endif /* HAVE_YASSL */
#endif /* __NETWARE__ */
static void
report_errors(SSL* ssl)
{
unsigned long l;
const char *file;
const char *data;
int line, flags;
#ifndef DBUG_OFF
char buf[512];
#endif
DBUG_ENTER("report_errors");
while ((l= ERR_get_error_line_data(&file,&line,&data,&flags)))
{
DBUG_PRINT("error", ("OpenSSL: %s:%s:%d:%s\n", ERR_error_string(l,buf),
file,line,(flags&ERR_TXT_STRING)?data:"")) ;
}
if (ssl)
DBUG_PRINT("error", ("error: %s",
ERR_error_string(SSL_get_error(ssl, l), buf)));
DBUG_PRINT("info", ("socket_errno: %d", socket_errno));
DBUG_VOID_RETURN;
}
int vio_ssl_read(Vio *vio, gptr buf, int size)
{
int r;
DBUG_ENTER("vio_ssl_read");
DBUG_PRINT("enter", ("sd: %d buf: 0x%lx size: %d ssl: 0x%lx",
vio->sd, (long) buf, size, (long) vio->ssl_arg));
r= SSL_read((SSL*) vio->ssl_arg, buf, size);
#ifndef DBUG_OFF
if (r < 0)
report_errors((SSL*) vio->ssl_arg);
#endif
DBUG_PRINT("exit", ("%d", r));
DBUG_RETURN(r);
}
int vio_ssl_write(Vio *vio, const gptr buf, int size)
{
int r;
DBUG_ENTER("vio_ssl_write");
DBUG_PRINT("enter", ("sd: %d buf: 0x%lx size: %d", vio->sd, (long) buf, size));
r= SSL_write((SSL*) vio->ssl_arg, buf, size);
#ifndef DBUG_OFF
if (r < 0)
report_errors((SSL*) vio->ssl_arg);
#endif
DBUG_PRINT("exit", ("%d", r));
DBUG_RETURN(r);
}
int vio_ssl_close(Vio *vio)
{
int r= 0;
SSL *ssl= (SSL*)vio->ssl_arg;
DBUG_ENTER("vio_ssl_close");
if (ssl)
{
switch ((r= SSL_shutdown(ssl)))
{
case 1: /* Shutdown successful */
break;
case 0: /* Shutdown not yet finished, call it again */
if ((r= SSL_shutdown(ssl) >= 0))
break;
/* Fallthrough */
default: /* Shutdown failed */
DBUG_PRINT("vio_error", ("SSL_shutdown() failed, error: %d",
SSL_get_error(ssl, r)));
break;
}
SSL_free(ssl);
vio->ssl_arg= 0;
}
DBUG_RETURN(vio_close(vio));
}
int sslaccept(struct st_VioSSLFd *ptr, Vio *vio, long timeout)
{
SSL *ssl;
my_bool unused;
my_bool net_blocking;
enum enum_vio_type old_type;
DBUG_ENTER("sslaccept");
DBUG_PRINT("enter", ("sd: %d ptr: 0x%lx, timeout: %ld",
vio->sd, (long) ptr, timeout));
old_type= vio->type;
net_blocking= vio_is_blocking(vio);
vio_blocking(vio, 1, &unused); /* Must be called before reset */
vio_reset(vio, VIO_TYPE_SSL, vio->sd, 0, FALSE);
if (!(ssl= SSL_new(ptr->ssl_context)))
{
DBUG_PRINT("error", ("SSL_new failure"));
report_errors(ssl);
vio_reset(vio, old_type,vio->sd,0,FALSE);
vio_blocking(vio, net_blocking, &unused);
DBUG_RETURN(1);
}
vio->ssl_arg= (void*)ssl;
DBUG_PRINT("info", ("ssl: 0x%lx timeout: %ld", (long) ssl, timeout));
SSL_clear(ssl);
SSL_SESSION_set_timeout(SSL_get_session(ssl), timeout);
SSL_set_fd(ssl, vio->sd);
if (SSL_accept(ssl) < 1)
{
DBUG_PRINT("error", ("SSL_accept failure"));
report_errors(ssl);
SSL_free(ssl);
vio->ssl_arg= 0;
vio_reset(vio, old_type,vio->sd,0,FALSE);
vio_blocking(vio, net_blocking, &unused);
DBUG_RETURN(1);
}
#ifndef DBUG_OFF
{
char buf[1024];
X509 *client_cert;
DBUG_PRINT("info",("cipher_name= '%s'", SSL_get_cipher_name(ssl)));
if ((client_cert= SSL_get_peer_certificate (ssl)))
{
DBUG_PRINT("info",("Client certificate:"));
X509_NAME_oneline (X509_get_subject_name (client_cert),
buf, sizeof(buf));
DBUG_PRINT("info",("\t subject: %s", buf));
X509_NAME_oneline (X509_get_issuer_name (client_cert),
buf, sizeof(buf));
DBUG_PRINT("info",("\t issuer: %s", buf));
X509_free (client_cert);
}
else
DBUG_PRINT("info",("Client does not have certificate."));
if (SSL_get_shared_ciphers(ssl, buf, sizeof(buf)))
{
DBUG_PRINT("info",("shared_ciphers: '%s'", buf));
}
else
DBUG_PRINT("info",("no shared ciphers!"));
}
#endif
DBUG_RETURN(0);
}
int sslconnect(struct st_VioSSLFd *ptr, Vio *vio, long timeout)
{
SSL *ssl;
my_bool unused;
my_bool net_blocking;
enum enum_vio_type old_type;
DBUG_ENTER("sslconnect");
DBUG_PRINT("enter", ("sd: %d ptr: 0x%lx ctx: 0x%lx",
vio->sd, (long) ptr, (long) ptr->ssl_context));
old_type= vio->type;
net_blocking= vio_is_blocking(vio);
vio_blocking(vio, 1, &unused); /* Must be called before reset */
vio_reset(vio, VIO_TYPE_SSL, vio->sd, 0, FALSE);
if (!(ssl= SSL_new(ptr->ssl_context)))
{
DBUG_PRINT("error", ("SSL_new failure"));
report_errors(ssl);
vio_reset(vio, old_type, vio->sd, 0, FALSE);
vio_blocking(vio, net_blocking, &unused);
DBUG_RETURN(1);
}
vio->ssl_arg= (void*)ssl;
DBUG_PRINT("info", ("ssl: 0x%lx timeout: %ld", (long) ssl, timeout));
SSL_clear(ssl);
SSL_SESSION_set_timeout(SSL_get_session(ssl), timeout);
SSL_set_fd(ssl, vio->sd);
if (SSL_connect(ssl) < 1)
{
DBUG_PRINT("error", ("SSL_connect failure"));
report_errors(ssl);
SSL_free(ssl);
vio->ssl_arg= 0;
vio_reset(vio, old_type, vio->sd, 0, FALSE);
vio_blocking(vio, net_blocking, &unused);
DBUG_RETURN(1);
}
#ifndef DBUG_OFF
{
X509 *server_cert;
DBUG_PRINT("info",("cipher_name: '%s'" , SSL_get_cipher_name(ssl)));
if ((server_cert= SSL_get_peer_certificate (ssl)))
{
char buf[256];
DBUG_PRINT("info",("Server certificate:"));
X509_NAME_oneline(X509_get_subject_name(server_cert), buf, sizeof(buf));
DBUG_PRINT("info",("\t subject: %s", buf));
X509_NAME_oneline (X509_get_issuer_name(server_cert), buf, sizeof(buf));
DBUG_PRINT("info",("\t issuer: %s", buf));
X509_free (server_cert);
}
else
DBUG_PRINT("info",("Server does not have certificate."));
}
#endif
DBUG_RETURN(0);
}
int vio_ssl_blocking(Vio *vio __attribute__((unused)),
my_bool set_blocking_mode,
my_bool *old_mode)
{
/* Mode is always blocking */
*old_mode= 1;
/* Return error if we try to change to non_blocking mode */
return (set_blocking_mode ? 0 : 1);
}
#endif /* HAVE_OPENSSL */
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