BUG#10589: des_encrypt functionality always return NULL

- Push warnings if des_encrypt or des_descrypt function fails because of out of resources or wrong params.
 - Push warning if des_encrypt or des_decrypt function is used when server is missing support for openssl.
 - Add test func_encrypt_nossl that is tun when the server is missing support for openssl. 


mysql-test/r/func_encrypt.result:
  Add tests for use of des_* function with invalid parameters
mysql-test/t/func_encrypt.test:
  Add tests for use of des_* function with invalid parameters
sql/item_strfunc.cc:
  Push warning if invalid paremeters are used
  Push warning if out of resources
  Push warning if user tries to use des_* function when the server has been compiled without support for openssl.

mysql-test/r/func_encrypt.result

@@ -120,6 +120,60 @@ hello
 select des_decrypt(des_encrypt("hello",4),'password4');
 des_decrypt(des_encrypt("hello",4),'password4')
 hello
+select des_encrypt("hello",10);
+des_encrypt("hello",10)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_encrypt(NULL);
+des_encrypt(NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_encrypt(NULL, 10);
+des_encrypt(NULL, 10)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_encrypt(NULL, NULL);
+des_encrypt(NULL, NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_encrypt(10, NULL);
+des_encrypt(10, NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_encrypt("hello", NULL);
+des_encrypt("hello", NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_encrypt'
+select des_decrypt("hello",10);
+des_decrypt("hello",10)
+hello
+select des_decrypt(NULL);
+des_decrypt(NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_decrypt'
+select des_decrypt(NULL, 10);
+des_decrypt(NULL, 10)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_decrypt'
+select des_decrypt(NULL, NULL);
+des_decrypt(NULL, NULL)
+NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_decrypt'
+select des_decrypt(10, NULL);
+des_decrypt(10, NULL)
+10
+select des_decrypt("hello", NULL);
+des_decrypt("hello", NULL)
+hello
 SET @a=des_decrypt(des_encrypt("hello"));
 flush des_key_file;
 select @a = des_decrypt(des_encrypt("hello"));
@@ -134,6 +188,8 @@ NULL
 select hex(des_decrypt(des_encrypt("hello","hidden")));
 hex(des_decrypt(des_encrypt("hello","hidden")))
 NULL
+Warnings:
+Error	1108	Incorrect parameters to procedure 'des_decrypt'
 explain extended select des_decrypt(des_encrypt("hello",4),'password2'), des_decrypt(des_encrypt("hello","hidden"));
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used

mysql-test/r/func_encrypt_nossl.result

@@ -0,0 +1,93 @@
+select des_encrypt("test", 'akeystr');
+des_encrypt("test", 'akeystr')
+NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_encrypt("test", 1);
+des_encrypt("test", 1)
+NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_encrypt("test", 9);
+des_encrypt("test", 9)
+NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_encrypt("test", 100);
+des_encrypt("test", 100)
+NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_encrypt("test", NULL);
+des_encrypt("test", NULL)
+NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt("test", 'anotherkeystr');
+des_decrypt("test", 'anotherkeystr')
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(1, 1);
+des_decrypt(1, 1)
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(des_encrypt("test", 'thekey'));
+des_decrypt(des_encrypt("test", 'thekey'))
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select hex(des_encrypt("hello")),des_decrypt(des_encrypt("hello"));
+hex(des_encrypt("hello"))	des_decrypt(des_encrypt("hello"))
+NULL	NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(des_encrypt("hello",4));
+des_decrypt(des_encrypt("hello",4))
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(des_encrypt("hello",'test'),'test');
+des_decrypt(des_encrypt("hello",'test'),'test')
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select hex(des_encrypt("hello")),hex(des_encrypt("hello",5)),hex(des_encrypt("hello",'default_password'));
+hex(des_encrypt("hello"))	hex(des_encrypt("hello",5))	hex(des_encrypt("hello",'default_password'))
+NULL	NULL	NULL
+Warnings:
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+Error	1289	The 'des_encrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(des_encrypt("hello"),'default_password');
+des_decrypt(des_encrypt("hello"),'default_password')
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select des_decrypt(des_encrypt("hello",4),'password4');
+des_decrypt(des_encrypt("hello",4),'password4')
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+SET @a=des_decrypt(des_encrypt("hello"));
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+flush des_key_file;
+select @a = des_decrypt(des_encrypt("hello"));
+@a = des_decrypt(des_encrypt("hello"))
+NULL
+select hex("hello");
+hex("hello")
+68656C6C6F
+select hex(des_decrypt(des_encrypt("hello",4),'password2'));
+hex(des_decrypt(des_encrypt("hello",4),'password2'))
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working
+select hex(des_decrypt(des_encrypt("hello","hidden")));
+hex(des_decrypt(des_encrypt("hello","hidden")))
+NULL
+Warnings:
+Error	1289	The 'des_decrypt' feature is disabled; you need MySQL built with '--with-openssl' to have it working

mysql-test/r/not_openssl.require

@@ -0,0 +1,2 @@
+Variable_name	Value
+have_openssl	NO