The world's most popular open source database

MySQL 5.1: Item_func_aes_encrypt Class Reference

Item_func_aes_encrypt Class Reference

#include <item_strfunc.h>

Inheritance diagram for Item_func_aes_encrypt:

[legend]Collaboration diagram for Item_func_aes_encrypt:

[legend]List of all members.


Public Member Functions
	Item_func_aes_encrypt (Item a, Item b)
String *	val_str (String *)
void	fix_length_and_dec ()
const char *	func_name () const

Detailed Description

Definition at line 64 of file item_strfunc.h.

Constructor & Destructor Documentation

Item_func_aes_encrypt::Item_func_aes_encrypt	(	Item *	a,
		Item *	b
	)			`[inline]`

Definition at line 67 of file item_strfunc.h.

00067 :Item_str_func(a,b) {}

Member Function Documentation

void Item_func_aes_encrypt::fix_length_and_dec ( ) [virtual]

Implements Item_result_field.

Definition at line 250 of file item_strfunc.cc.

References Item_func::args, Item::max_length, and my_aes_get_size().

00251 {
00252   max_length=my_aes_get_size(args[0]->max_length);
00253 }

Here is the call graph for this function:

const char* Item_func_aes_encrypt::func_name ( ) const [inline, virtual]

Implements Item_func.

Definition at line 70 of file item_strfunc.h.

00070 { return "aes_encrypt"; }

String * Item_func_aes_encrypt::val_str ( String * ) [virtual]

Implements Item.

Definition at line 220 of file item_strfunc.cc.

References String::alloc(), Item_func::args, DBUG_ASSERT, Item::fixed, key, String::length(), my_aes_encrypt(), my_aes_get_size(), Item::null_value, String::ptr(), Item::str_value, system_charset_info, and Item::val_str().

00221 {
00222   DBUG_ASSERT(fixed == 1);
00223   char key_buff[80];
00224   String tmp_key_value(key_buff, sizeof(key_buff), system_charset_info);
00225   String *sptr= args[0]->val_str(str);                  // String to encrypt
00226   String *key=  args[1]->val_str(&tmp_key_value);       // key
00227   int aes_length;
00228   if (sptr && key) // we need both arguments to be not NULL
00229   {
00230     null_value=0;
00231     aes_length=my_aes_get_size(sptr->length()); // Calculate result length
00232 
00233     if (!str_value.alloc(aes_length))           // Ensure that memory is free
00234     {
00235       // finally encrypt directly to allocated buffer.
00236       if (my_aes_encrypt(sptr->ptr(),sptr->length(), (char*) str_value.ptr(),
00237                          key->ptr(), key->length()) == aes_length)
00238       {
00239         // We got the expected result length
00240         str_value.length((uint) aes_length);
00241         return &str_value;
00242       }
00243     }
00244   }
00245   null_value=1;
00246   return 0;
00247 }

Here is the call graph for this function:

The documentation for this class was generated from the following files:

mysql/src/5.1-dbg/sql/item_strfunc.h
mysql/src/5.1-dbg/sql/item_strfunc.cc

Generated on Sat Sep 9 21:25:14 2006 for MySQL 5.1 by

1.4.7

The world's most popular open source database

Item_func_aes_encrypt Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation