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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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 <mysql_priv.h>
#include <m_ctype.h>
#ifdef HAVE_OPENSSL
struct st_des_keyschedule des_keyschedule[10];
uint des_default_key;
pthread_mutex_t LOCK_des_key_file;
static int initialized= 0;
void
init_des_key_file()
{
if (!initialized)
{
initialized=1;
pthread_mutex_init(&LOCK_des_key_file,MY_MUTEX_INIT_FAST);
}
}
/*
Function which loads DES keys from plaintext file into memory on MySQL
server startup and on command FLUSH DES_KEY_FILE.
Blame tonu@spam.ee on bugs ;)
RETURN
0 ok
1 Error
*/
#define des_cs &my_charset_latin1
bool
load_des_key_file(const char *file_name)
{
bool result=1;
File file;
IO_CACHE io;
DBUG_ENTER("load_des_key_file");
DBUG_PRINT("enter",("name: %s",file_name));
init_des_key_file();
VOID(pthread_mutex_lock(&LOCK_des_key_file));
if ((file=my_open(file_name,O_RDONLY | O_BINARY ,MYF(MY_WME))) < 0 ||
init_io_cache(&io, file, IO_SIZE*2, READ_CACHE, 0, 0, MYF(MY_WME)))
goto error;
bzero((char*) des_keyschedule,sizeof(struct st_des_keyschedule) * 10);
des_default_key=15; // Impossible key
for (;;)
{
char *start, *end;
char buf[1024], offset;
st_des_keyblock keyblock;
uint length;
if (!(length=my_b_gets(&io,buf,sizeof(buf)-1)))
break; // End of file
offset=buf[0];
if (offset >= '0' && offset <= '9') // If ok key
{
offset=(char) (offset - '0');
// Remove newline and possible other control characters
for (start=buf+1 ; my_isspace(des_cs, *start) ; start++) ;
end=buf+length;
for (end=strend(buf) ;
end > start && !my_isgraph(des_cs, end[-1]) ; end--) ;
if (start != end)
{
DES_cblock ivec;
bzero((char*) &ivec,sizeof(ivec));
// We make good 24-byte (168 bit) key from given plaintext key with MD5
EVP_BytesToKey(EVP_des_ede3_cbc(),EVP_md5(),NULL,
(uchar *) start, (int) (end-start),1,
(uchar *) &keyblock,
ivec);
DES_set_key_unchecked(&keyblock.key1,&(des_keyschedule[(int)offset].ks1));
DES_set_key_unchecked(&keyblock.key2,&(des_keyschedule[(int)offset].ks2));
DES_set_key_unchecked(&keyblock.key3,&(des_keyschedule[(int)offset].ks3));
if (des_default_key == 15)
des_default_key= (uint) offset; // use first as def.
}
}
else if (offset != '#')
sql_print_error("load_des_file: Found wrong key_number: %c",offset);
}
result=0;
error:
if (file >= 0)
{
my_close(file,MYF(0));
end_io_cache(&io);
}
VOID(pthread_mutex_unlock(&LOCK_des_key_file));
DBUG_RETURN(result);
}
void free_des_key_file()
{
if (initialized)
{
initialized= 01;
pthread_mutex_destroy(&LOCK_des_key_file);
}
}
#endif /* HAVE_OPENSSL */
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