~drizzle-trunk/drizzle/development : contents of plugin/md5/md5udf.cc at revision 520.5.1

~drizzle-trunk/drizzle/development : (revision 520.5.1)

/* Copyright (C) 2006 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

#include <drizzled/common_includes.h>
#include <drizzled/item_func.h>
#include <drizzled/item_strfunc.h>

#include <openssl/md5.h>

class Item_func_md5 : public Item_str_func
{
public:
  const char *func_name() const { return "md5"; }
  String *val_str(String*);
  void fix_length_and_dec() {
    max_length=32;
    args[0]->collation.set(
      get_charset_by_csname(args[0]->collation.collation->csname,
                            MY_CS_BINSORT,MYF(0)), DERIVATION_COERCIBLE);
  }

};


String *Item_func_md5::val_str(String *str)
{
  assert(fixed == 1);
  String * sptr= args[0]->val_str(str);
  str->set_charset(&my_charset_bin);
  if (sptr)
  {
    MD5_CTX context;
    unsigned char digest[16];

    null_value=0;
    MD5_Init (&context);
    MD5_Update (&context,(unsigned char *) sptr->ptr(), sptr->length());
    MD5_Final (digest, &context);
    if (str->alloc(32))				// Ensure that memory is free
    {
      null_value=1;
      return 0;
    }
    snprintf((char *) str->ptr(), 33,
	    "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
	    digest[0], digest[1], digest[2], digest[3],
	    digest[4], digest[5], digest[6], digest[7],
	    digest[8], digest[9], digest[10], digest[11],
	    digest[12], digest[13], digest[14], digest[15]);
    str->length((uint) 32);
    return str;
  }
  null_value=1;
  return 0;
}


Item_func* create_md5udf_item(MEM_ROOT* m)
{
  return  new (m) Item_func_md5();
}

struct udf_func md5udf = {
  { C_STRING_WITH_LEN("md5") },
  create_md5udf_item
};

static int md5udf_plugin_init(void *p)
{
  udf_func **f = (udf_func**) p;

  *f= &md5udf;

  return 0;
}

static int md5udf_plugin_deinit(void *p)
{
  udf_func *udff = (udf_func *) p;
  (void)udff;
  return 0;
}

mysql_declare_plugin(md5)
{
  DRIZZLE_UDF_PLUGIN,
  "md5",
  "1.0",
  "Stewart Smith",
  "UDF for computing md5sum",
  PLUGIN_LICENSE_GPL,
  md5udf_plugin_init, /* Plugin Init */
  md5udf_plugin_deinit, /* Plugin Deinit */
  NULL,   /* status variables */
  NULL,   /* system variables */
  NULL    /* config options */
}
mysql_declare_plugin_end;

139.1.1 by Stewart Smith Move MD5() into a UDF	1	/* Copyright (C) 2006 MySQL AB
	2
	3	This program is free software; you can redistribute it and/or modify
	4	it under the terms of the GNU General Public License as published by
	5	the Free Software Foundation; version 2 of the License.
	6
	7	This program is distributed in the hope that it will be useful,
	8	but WITHOUT ANY WARRANTY; without even the implied warranty of
	9	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	10	GNU General Public License for more details.
	11
	12	You should have received a copy of the GNU General Public License
	13	along with this program; if not, write to the Free Software
	14	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
	15
243.1.14 by Jay Pipes * Ensured all drizzled/field/x.cc files to include mysql_priv.h	16	#include <drizzled/common_includes.h>
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	17	#include <drizzled/item_func.h>
	18	#include <drizzled/item_strfunc.h>
	19
139.1.1 by Stewart Smith Move MD5() into a UDF	20	#include <openssl/md5.h>
139.1.1 by Stewart Smith Move MD5() into a UDF	21
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	22	class Item_func_md5 : public Item_str_func
	23	{
	24	public:
	25	const char *func_name() const { return "md5"; }
	26	String val_str(String);
	27	void fix_length_and_dec() {
	28	max_length=32;
	29	args[0]->collation.set(
	30	get_charset_by_csname(args[0]->collation.collation->csname,
	31	MY_CS_BINSORT,MYF(0)), DERIVATION_COERCIBLE);
	32	}
	33
	34	};
	35
	36
	37	String Item_func_md5::val_str(String str)
	38	{
	39	assert(fixed == 1);
	40	String * sptr= args[0]->val_str(str);
	41	str->set_charset(&my_charset_bin);
	42	if (sptr)
	43	{
	44	MD5_CTX context;
481 by Brian Aker Remove all of uchar.	45	unsigned char digest[16];
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	46
	47	null_value=0;
	48	MD5_Init (&context);
481 by Brian Aker Remove all of uchar.	49	MD5_Update (&context,(unsigned char *) sptr->ptr(), sptr->length());
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	50	MD5_Final (digest, &context);
	51	if (str->alloc(32)) // Ensure that memory is free
	52	{
	53	null_value=1;
	54	return 0;
	55	}
	56	snprintf((char *) str->ptr(), 33,
	57	"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
	58	digest[0], digest[1], digest[2], digest[3],
	59	digest[4], digest[5], digest[6], digest[7],
	60	digest[8], digest[9], digest[10], digest[11],
	61	digest[12], digest[13], digest[14], digest[15]);
	62	str->length((uint) 32);
	63	return str;
	64	}
	65	null_value=1;
139.1.1 by Stewart Smith Move MD5() into a UDF	66	return 0;
	67	}
	68
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	69
	70	Item_func* create_md5udf_item(MEM_ROOT* m)
	71	{
	72	return new (m) Item_func_md5();
	73	}
	74
	75	struct udf_func md5udf = {
	76	{ C_STRING_WITH_LEN("md5") },
	77	create_md5udf_item
	78	};
139.1.1 by Stewart Smith Move MD5() into a UDF	79
	80	static int md5udf_plugin_init(void *p)
	81	{
139.1.8 by Stewart Smith UDFs are now normal Item_func objects. Simplifies handling them a lot.	82	udf_func f = (udf_func) p;
	83
	84	*f= &md5udf;
139.1.1 by Stewart Smith Move MD5() into a UDF	85
	86	return 0;
	87	}
	88
	89	static int md5udf_plugin_deinit(void *p)
	90	{
	91	udf_func udff = (udf_func ) p;
139.1.4 by Stewart Smith merge mainline and update md5 and crc32 plugins to new interface	92	(void)udff;
139.1.1 by Stewart Smith Move MD5() into a UDF	93	return 0;
	94	}
	95
139.1.4 by Stewart Smith merge mainline and update md5 and crc32 plugins to new interface	96	mysql_declare_plugin(md5)
139.1.1 by Stewart Smith Move MD5() into a UDF	97	{
319.1.1 by Grant Limberg renamed all instances of MYSQL_ to DRIZZLE_	98	DRIZZLE_UDF_PLUGIN,
139.1.1 by Stewart Smith Move MD5() into a UDF	99	"md5",
139.1.4 by Stewart Smith merge mainline and update md5 and crc32 plugins to new interface	100	"1.0",
139.1.1 by Stewart Smith Move MD5() into a UDF	101	"Stewart Smith",
139.1.4 by Stewart Smith merge mainline and update md5 and crc32 plugins to new interface	102	"UDF for computing md5sum",
139.1.1 by Stewart Smith Move MD5() into a UDF	103	PLUGIN_LICENSE_GPL,
	104	md5udf_plugin_init, /* Plugin Init */
	105	md5udf_plugin_deinit, /* Plugin Deinit */
	106	NULL, /* status variables */
	107	NULL, /* system variables */
	108	NULL /* config options */
	109	}
	110	mysql_declare_plugin_end;