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/*
* ejabberd, Copyright (C) 2002-2012 ProcessOne
*
* 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 <erl_driver.h>
#include <openssl/sha.h>
#ifdef HAVE_MD2
#include <openssl/md2.h>
#endif
/*
* R15B changed several driver callbacks to use ErlDrvSizeT and
* ErlDrvSSizeT typedefs instead of int.
* This provides missing typedefs on older OTP versions.
*/
#if ERL_DRV_EXTENDED_MAJOR_VERSION < 2
typedef int ErlDrvSizeT;
typedef int ErlDrvSSizeT;
#endif
static ErlDrvData sha_drv_start(ErlDrvPort port, char *buf)
{
set_port_control_flags(port, PORT_CONTROL_FLAG_BINARY);
return NULL;
}
static ErlDrvSSizeT sha_drv_control(ErlDrvData handle,
unsigned int command,
char *buf, ErlDrvSizeT len,
char **rbuf, ErlDrvSizeT rlen)
{
ErlDrvBinary *b = NULL;
switch (command) {
#ifdef HAVE_MD2
case 2:
rlen = MD2_DIGEST_LENGTH;
b = driver_alloc_binary(rlen);
if (b) MD2((unsigned char*)buf, len, (unsigned char*)b->orig_bytes);
break;
#endif
case 224:
rlen = SHA224_DIGEST_LENGTH;
b = driver_alloc_binary(rlen);
if (b) SHA224((unsigned char*)buf, len, (unsigned char*)b->orig_bytes);
break;
case 256:
rlen = SHA256_DIGEST_LENGTH;
b = driver_alloc_binary(rlen);
if (b) SHA256((unsigned char*)buf, len, (unsigned char*)b->orig_bytes);
break;
case 384:
rlen = SHA384_DIGEST_LENGTH;
b = driver_alloc_binary(rlen);
if (b) SHA384((unsigned char*)buf, len, (unsigned char*)b->orig_bytes);
break;
case 512:
rlen = SHA512_DIGEST_LENGTH;
b = driver_alloc_binary(rlen);
if (b) SHA512((unsigned char*)buf, len, (unsigned char*)b->orig_bytes);
break;
};
if (b) {
*rbuf = (char *)b;
} else {
*rbuf = NULL;
rlen = 0;
};
return rlen;
}
ErlDrvEntry sha_driver_entry = {
NULL, /* F_PTR init, N/A */
sha_drv_start, /* L_PTR start, called when port is opened */
NULL, /* F_PTR stop, called when port is closed */
NULL, /* F_PTR output, called when erlang has sent */
NULL, /* F_PTR ready_input, called when input descriptor ready */
NULL, /* F_PTR ready_output, called when output descriptor ready */
"sha_drv", /* char *driver_name, the argument to open_port */
NULL, /* F_PTR finish, called when unloaded */
NULL, /* handle */
sha_drv_control, /* F_PTR control, port_command callback */
NULL, /* F_PTR timeout, reserved */
NULL, /* F_PTR outputv, reserved */
/* Added in Erlang/OTP R15B: */
NULL, /* ready_async */
NULL, /* flush */
NULL, /* call */
NULL, /* event */
ERL_DRV_EXTENDED_MARKER, /* extended_marker */
ERL_DRV_EXTENDED_MAJOR_VERSION, /* major_version */
ERL_DRV_EXTENDED_MINOR_VERSION, /* minor_version */
0, /* driver_flags */
NULL, /* handle2 */
NULL, /* process_exit */
NULL /* stop_select */
};
DRIVER_INIT(sha_drv) /* must match name in driver_entry */
{
return &sha_driver_entry;
}
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