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.

1 files changed, 56 insertions, 0 deletions

diff --git a/mysql-test/r/func_encrypt.result b/mysql-test/r/func_encrypt.result
index d32e67fe7d5..992d01c66cd 100644
--- a/mysql-test/r/func_encrypt.result
+++ b/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