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mariadb/vio/viosslfactories.c
unknown 69a5dd196c Error code for ssl connection 
Fix bug when server hang(with SSL, with modified libmysql)
Add options master-ssl-capath and master-ssl-cipher
Add some error checking(SSL) 


include/errmsg.h:
  Error code for SSL connection
include/violite.h:
  Change return value in sslaccept
  Remove unused variable open_
libmysql/errmsg.c:
  Add client side descriptive message when ssl handshake fail
libmysql/libmysql.c:
  Add ssl error code
  Add proper error checking
sql/mysqld.cc:
  Add options master-ssl-capath and master-ssl-cipher
sql/sql_parse.cc:
  Add error checking after sslaccept
vio/viossl.c:
  Add ssl handshake error cheking
vio/viosslfactories.c:
  Change error description when using wrong key or certificate
2002-11-05 12:05:58 +04:00

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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; either version 2 of the License, or
(at your option) any later version.
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 */
#include <my_global.h>
#ifdef HAVE_OPENSSL
#include <my_sys.h>
#include <mysql_com.h>
#include <violite.h>
static bool ssl_algorithms_added = FALSE;
static bool ssl_error_strings_loaded= FALSE;
static int verify_depth = 0;
static int verify_error = X509_V_OK;
static unsigned char dh512_p[]=
{
0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
0x47,0x74,0xE8,0x33,
};
static unsigned char dh512_g[]={
0x02,
};
static DH *get_dh512(void)
{
DH *dh;
if ((dh=DH_new()))
{
dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
if (! dh->p || ! dh->g)
{
DH_free(dh);
dh=0;
}
}
return(dh);
}
static void
report_errors()
{
unsigned long l;
const char* file;
const char* data;
int line,flags;
DBUG_ENTER("report_errors");
while ((l=ERR_get_error_line_data(&file,&line,&data,&flags)) != 0)
{
#ifndef DBUG_OFF /* Avoid warning */
char buf[200];
DBUG_PRINT("error", ("OpenSSL: %s:%s:%d:%s\n", ERR_error_string(l,buf),
file,line,(flags & ERR_TXT_STRING) ? data : "")) ;
#endif
}
DBUG_VOID_RETURN;
}
static int
vio_set_cert_stuff(SSL_CTX *ctx, const char *cert_file, const char *key_file)
{
DBUG_ENTER("vio_set_cert_stuff");
DBUG_PRINT("enter", ("ctx=%p, cert_file=%s, key_file=%s",
ctx, cert_file, key_file));
if (cert_file != NULL)
{
if (SSL_CTX_use_certificate_file(ctx,cert_file,SSL_FILETYPE_PEM) <= 0)
{
DBUG_PRINT("error",("unable to get certificate from '%s'\n",cert_file));
/* FIX stderr */
fprintf(stderr,"Error when connection to server using SSL:");
ERR_print_errors_fp(stderr);
fprintf(stderr,"Unable to get certificate from '%s'\n", cert_file);
fflush(stderr);
DBUG_RETURN(0);
}
if (key_file == NULL)
key_file = cert_file;
if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
SSL_FILETYPE_PEM) <= 0)
{
DBUG_PRINT("error", ("unable to get private key from '%s'\n",key_file));
/* FIX stderr */
fprintf(stderr,"Error when connection to server using SSL:");
ERR_print_errors_fp(stderr);
fprintf(stderr,"Unable to get private key from '%s'\n", cert_file);
fflush(stderr);
DBUG_RETURN(0);
}
/*
If we are using DSA, we can copy the parameters from the private key
Now we know that a key and cert have been set against the SSL context
*/
if (!SSL_CTX_check_private_key(ctx))
{
DBUG_PRINT("error",
("Private key does not match the certificate public key\n"));
DBUG_RETURN(0);
}
}
DBUG_RETURN(1);
}
static int
vio_verify_callback(int ok, X509_STORE_CTX *ctx)
{
char buf[256];
X509* err_cert;
int err,depth;
DBUG_ENTER("vio_verify_callback");
DBUG_PRINT("enter", ("ok=%d, ctx=%p", ok, ctx));
err_cert=X509_STORE_CTX_get_current_cert(ctx);
err= X509_STORE_CTX_get_error(ctx);
depth= X509_STORE_CTX_get_error_depth(ctx);
X509_NAME_oneline(X509_get_subject_name(err_cert),buf,sizeof(buf));
if (!ok)
{
DBUG_PRINT("error",("verify error: num: %d : '%s'\n",err,
X509_verify_cert_error_string(err)));
if (verify_depth >= depth)
{
ok=1;
verify_error=X509_V_OK;
}
else
{
verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
}
}
switch (ctx->error) {
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
DBUG_PRINT("info",("issuer= %s\n",buf));
break;
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
DBUG_PRINT("error", ("notBefore"));
/*ASN1_TIME_print_fp(stderr,X509_get_notBefore(ctx->current_cert));*/
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
DBUG_PRINT("error", ("notAfter error"));
/*ASN1_TIME_print_fp(stderr,X509_get_notAfter(ctx->current_cert));*/
break;
}
DBUG_PRINT("exit", ("%d", ok));
DBUG_RETURN(ok);
}
/************************ VioSSLConnectorFd **********************************/
struct st_VioSSLConnectorFd *
new_VioSSLConnectorFd(const char* key_file,
const char* cert_file,
const char* ca_file,
const char* ca_path,
const char* cipher)
{
int verify = SSL_VERIFY_PEER;
struct st_VioSSLConnectorFd* ptr;
int result;
DH *dh=NULL;
DBUG_ENTER("new_VioSSLConnectorFd");
DBUG_PRINT("enter",
("key_file=%s, cert_file=%s, ca_path=%s, ca_file=%s, cipher=%s",
key_file, cert_file, ca_path, ca_file, cipher));
if (!(ptr=((struct st_VioSSLConnectorFd*)
my_malloc(sizeof(struct st_VioSSLConnectorFd),MYF(0)))))
DBUG_RETURN(0);
ptr->ssl_context_= 0;
ptr->ssl_method_= 0;
/* FIXME: constants! */
if (!ssl_algorithms_added)
{
DBUG_PRINT("info", ("todo: OpenSSL_add_all_algorithms()"));
ssl_algorithms_added = TRUE;
OpenSSL_add_all_algorithms();
}
if (!ssl_error_strings_loaded)
{
DBUG_PRINT("info", ("todo:SSL_load_error_strings()"));
ssl_error_strings_loaded = TRUE;
SSL_load_error_strings();
}
ptr->ssl_method_ = TLSv1_client_method();
ptr->ssl_context_ = SSL_CTX_new(ptr->ssl_method_);
DBUG_PRINT("info", ("ssl_context_: %p",ptr->ssl_context_));
if (ptr->ssl_context_ == 0)
{
DBUG_PRINT("error", ("SSL_CTX_new failed"));
report_errors();
goto ctor_failure;
}
/*
SSL_CTX_set_options
SSL_CTX_set_info_callback
*/
if (cipher)
{
result=SSL_CTX_set_cipher_list(ptr->ssl_context_, cipher);
DBUG_PRINT("info",("SSL_set_cipher_list() returned %d",result));
}
SSL_CTX_set_verify(ptr->ssl_context_, verify, vio_verify_callback);
if (vio_set_cert_stuff(ptr->ssl_context_, cert_file, key_file) == -1)
{
DBUG_PRINT("error", ("vio_set_cert_stuff failed"));
report_errors();
goto ctor_failure;
}
if (SSL_CTX_load_verify_locations( ptr->ssl_context_, ca_file,ca_path) == 0)
{
DBUG_PRINT("warning", ("SSL_CTX_load_verify_locations failed"));
if (SSL_CTX_set_default_verify_paths(ptr->ssl_context_) == 0)
{
DBUG_PRINT("error", ("SSL_CTX_set_default_verify_paths failed"));
report_errors();
goto ctor_failure;
}
}
/* DH stuff */
dh=get_dh512();
SSL_CTX_set_tmp_dh(ptr->ssl_context_,dh);
DH_free(dh);
DBUG_RETURN(ptr);
ctor_failure:
DBUG_PRINT("exit", ("there was an error"));
my_free((gptr)ptr,MYF(0));
DBUG_RETURN(0);
}
/************************ VioSSLAcceptorFd **********************************/
struct st_VioSSLAcceptorFd*
new_VioSSLAcceptorFd(const char *key_file,
const char *cert_file,
const char *ca_file,
const char *ca_path,
const char *cipher)
{
int verify = (SSL_VERIFY_PEER |
SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
SSL_VERIFY_CLIENT_ONCE);
struct st_VioSSLAcceptorFd* ptr;
int result;
DH *dh=NULL;
DBUG_ENTER("new_VioSSLAcceptorFd");
DBUG_PRINT("enter",
("key_file=%s, cert_file=%s, ca_path=%s, ca_file=%s, cipher=%s",
key_file, cert_file, ca_path, ca_file, cipher));
ptr= ((struct st_VioSSLAcceptorFd*)
my_malloc(sizeof(struct st_VioSSLAcceptorFd),MYF(0)));
ptr->ssl_context_=0;
ptr->ssl_method_=0;
/* FIXME: constants! */
ptr->session_id_context_ = ptr;
if (!ssl_algorithms_added)
{
DBUG_PRINT("info", ("todo: OpenSSL_add_all_algorithms()"));
ssl_algorithms_added = TRUE;
OpenSSL_add_all_algorithms();
}
if (!ssl_error_strings_loaded)
{
DBUG_PRINT("info", ("todo: SSL_load_error_strings()"));
ssl_error_strings_loaded = TRUE;
SSL_load_error_strings();
}
ptr->ssl_method_= TLSv1_server_method();
ptr->ssl_context_= SSL_CTX_new(ptr->ssl_method_);
if (ptr->ssl_context_ == 0)
{
DBUG_PRINT("error", ("SSL_CTX_new failed"));
report_errors();
goto ctor_failure;
}
if (cipher)
{
result=SSL_CTX_set_cipher_list(ptr->ssl_context_, cipher);
DBUG_PRINT("info",("SSL_set_cipher_list() returned %d",result));
}
/* SSL_CTX_set_quiet_shutdown(ctx,1); */
SSL_CTX_sess_set_cache_size(ptr->ssl_context_,128);
/* DH? */
SSL_CTX_set_verify(ptr->ssl_context_, verify, vio_verify_callback);
SSL_CTX_set_session_id_context(ptr->ssl_context_,
(const uchar*) &(ptr->session_id_context_),
sizeof(ptr->session_id_context_));
/*
SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
*/
if (vio_set_cert_stuff(ptr->ssl_context_, cert_file, key_file) == -1)
{
DBUG_PRINT("error", ("vio_set_cert_stuff failed"));
report_errors();
goto ctor_failure;
}
if (SSL_CTX_load_verify_locations( ptr->ssl_context_, ca_file, ca_path) == 0)
{
DBUG_PRINT("warning", ("SSL_CTX_load_verify_locations failed"));
if (SSL_CTX_set_default_verify_paths(ptr->ssl_context_)==0)
{
DBUG_PRINT("error", ("SSL_CTX_set_default_verify_paths failed"));
report_errors();
goto ctor_failure;
}
}
/* DH stuff */
dh=get_dh512();
SSL_CTX_set_tmp_dh(ptr->ssl_context_,dh);
DH_free(dh);
DBUG_RETURN(ptr);
ctor_failure:
DBUG_PRINT("exit", ("there was an error"));
my_free((gptr) ptr,MYF(0));
DBUG_RETURN(0);
}
#endif /* HAVE_OPENSSL */
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