加密使用关键字:ENCRYPTION
CREATE
procedure
dbo.sp_EytTest
@para
varchar
(
50
)
WITH ENCRYPTION
as
begin
select @para
end
go
WITH ENCRYPTION
as
begin
select @para
end
go
解密:
解密的储存过程都来自网络,需要在DAC下使用.
sql server 2000 解密 :
create
PROCEDURE
[
dbo
]
.
[
sp_decrypt
]
(
@objectname
varchar
(
50
))
AS
begin
set nocount on
begin tran
declare @objectname1 varchar ( 100 ), @orgvarbin varbinary ( 8000 )
declare @sql1 nvarchar ( 4000 ), @sql2 varchar ( 8000 ), @sql3 nvarchar ( 4000 ), @sql4 nvarchar ( 4000 )
DECLARE @OrigSpText1 nvarchar ( 4000 ), @OrigSpText2 nvarchar ( 4000 ) , @OrigSpText3 nvarchar ( 4000 ), @resultsp nvarchar ( 4000 )
declare @i int , @status int , @type varchar ( 10 ), @parentid int
declare @colid int , @n int , @q int , @j int , @k int , @encrypted int , @number int
select @type = xtype, @parentid = parent_obj from sysobjects where id = object_id ( @objectname )
create table # temp ( number int ,colid int ,ctext varbinary ( 8000 ),encrypted int ,status int )
insert # temp SELECT number ,colid,ctext,encrypted,status FROM syscomments WHERE id = object_id ( @objectname )
select @number = max ( number ) from # temp
set @k = 0
while @k <= @number
begin
if exists ( select 1 from syscomments where id = object_id ( @objectname ) and number = @k )
begin
if @type = ' P '
set @sql1 = ( case when @number > 1 then ' ALTER PROCEDURE ' + @objectname + ' ; ' + rtrim ( @k ) + ' WITH ENCRYPTION AS '
else ' ALTER PROCEDURE ' + @objectname + ' WITH ENCRYPTION AS '
end )
if @type = ' TR '
begin
declare @parent_obj varchar ( 255 ), @tr_parent_xtype varchar ( 10 )
select @parent_obj = parent_obj from sysobjects where id = object_id ( @objectname )
select @tr_parent_xtype = xtype from sysobjects where id = @parent_obj
if @tr_parent_xtype = ' V '
begin
set @sql1 = ' ALTER TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 '
end
else
begin
set @sql1 = ' ALTER TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
end
end
if @type = ' FN ' or @type = ' TF ' or @type = ' IF '
set @sql1 = ( case @type when ' TF ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
when ' FN ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns char(1) with encryption as begin return @a end '
when ' IF ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns table with encryption as return select @a as a '
end )
if @type = ' V '
set @sql1 = ' ALTER VIEW ' + @objectname + ' WITH ENCRYPTION AS SELECT 1 as f '
set @q = len ( @sql1 )
set @sql1 = @sql1 + REPLICATE ( ' - ' , 4000 - @q )
select @sql2 = REPLICATE ( ' - ' , 8000 )
set @sql3 = ' exec(@sql1 '
select @colid = max (colid) from # temp where number = @k
set @n = 1
while @n <= CEILING ( 1.0 * ( @colid - 1 ) / 2 ) and len ( @sql3 ) <= 3996
begin
set @sql3 = @sql3 + ' +@ '
set @n = @n + 1
end
set @sql3 = @sql3 + ' ) '
exec sp_executesql @sql3 ,N ' @sql1 nvarchar(4000),@ varchar(8000) ' , @sql1 = @sql1 ,@ = @sql2
end
set @k = @k + 1
end
set @k = 0
while @k <= @number
begin
if exists ( select 1 from syscomments where id = object_id ( @objectname ) and number = @k )
begin
select @colid = max (colid) from # temp where number = @k
set @n = 1
while @n <= @colid
begin
select @OrigSpText1 = ctext, @encrypted = encrypted, @status = status FROM # temp WHERE colid = @n and number = @k
SET @OrigSpText3 = ( SELECT ctext FROM syscomments WHERE id = object_id ( @objectname ) and colid = @n and number = @k )
if @n = 1
begin
if @type = ' P '
SET @OrigSpText2 = ( case when @number > 1 then ' CREATE PROCEDURE ' + @objectname + ' ; ' + rtrim ( @k ) + ' WITH ENCRYPTION AS '
else ' CREATE PROCEDURE ' + @objectname + ' WITH ENCRYPTION AS '
end )
if @type = ' FN ' or @type = ' TF ' or @type = ' IF '
SET @OrigSpText2 = ( case @type when ' TF ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
when ' FN ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns char(1) with encryption as begin return @a end '
when ' IF ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns table with encryption as return select @a as a '
end )
if @type = ' TR '
begin
if @tr_parent_xtype = ' V '
begin
set @OrigSpText2 = ' CREATE TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 '
end
else
begin
set @OrigSpText2 = ' CREATE TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
end
end
if @type = ' V '
set @OrigSpText2 = ' CREATE VIEW ' + @objectname + ' WITH ENCRYPTION AS SELECT 1 as f '
set @q = 4000 - len ( @OrigSpText2 )
set @OrigSpText2 = @OrigSpText2 + REPLICATE ( ' - ' , @q )
end
else
begin
SET @OrigSpText2 = REPLICATE ( ' - ' , 4000 )
end
SET @i = 1
SET @resultsp = replicate (N ' A ' , ( datalength ( @OrigSpText1 ) / 2 ))
WHILE @i <= datalength ( @OrigSpText1 ) / 2
BEGIN
SET @resultsp = stuff ( @resultsp , @i , 1 , NCHAR ( UNICODE ( substring ( @OrigSpText1 , @i , 1 )) ^
( UNICODE ( substring ( @OrigSpText2 , @i , 1 )) ^
UNICODE ( substring ( @OrigSpText3 , @i , 1 )))))
SET @i = @i + 1
END
set @orgvarbin = cast ( @OrigSpText1 as varbinary ( 8000 ))
set @resultsp = ( case when @encrypted = 1
then @resultsp
else convert ( nvarchar ( 4000 ), case when @status & 2 = 2 then uncompress( @orgvarbin ) else @orgvarbin end )
end )
print @resultsp
set @n = @n + 1
end
end
set @k = @k + 1
end
drop table # temp
rollback tran
end
AS
begin
set nocount on
begin tran
declare @objectname1 varchar ( 100 ), @orgvarbin varbinary ( 8000 )
declare @sql1 nvarchar ( 4000 ), @sql2 varchar ( 8000 ), @sql3 nvarchar ( 4000 ), @sql4 nvarchar ( 4000 )
DECLARE @OrigSpText1 nvarchar ( 4000 ), @OrigSpText2 nvarchar ( 4000 ) , @OrigSpText3 nvarchar ( 4000 ), @resultsp nvarchar ( 4000 )
declare @i int , @status int , @type varchar ( 10 ), @parentid int
declare @colid int , @n int , @q int , @j int , @k int , @encrypted int , @number int
select @type = xtype, @parentid = parent_obj from sysobjects where id = object_id ( @objectname )
create table # temp ( number int ,colid int ,ctext varbinary ( 8000 ),encrypted int ,status int )
insert # temp SELECT number ,colid,ctext,encrypted,status FROM syscomments WHERE id = object_id ( @objectname )
select @number = max ( number ) from # temp
set @k = 0
while @k <= @number
begin
if exists ( select 1 from syscomments where id = object_id ( @objectname ) and number = @k )
begin
if @type = ' P '
set @sql1 = ( case when @number > 1 then ' ALTER PROCEDURE ' + @objectname + ' ; ' + rtrim ( @k ) + ' WITH ENCRYPTION AS '
else ' ALTER PROCEDURE ' + @objectname + ' WITH ENCRYPTION AS '
end )
if @type = ' TR '
begin
declare @parent_obj varchar ( 255 ), @tr_parent_xtype varchar ( 10 )
select @parent_obj = parent_obj from sysobjects where id = object_id ( @objectname )
select @tr_parent_xtype = xtype from sysobjects where id = @parent_obj
if @tr_parent_xtype = ' V '
begin
set @sql1 = ' ALTER TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 '
end
else
begin
set @sql1 = ' ALTER TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
end
end
if @type = ' FN ' or @type = ' TF ' or @type = ' IF '
set @sql1 = ( case @type when ' TF ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
when ' FN ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns char(1) with encryption as begin return @a end '
when ' IF ' then
' ALTER FUNCTION ' + @objectname + ' (@a char(1)) returns table with encryption as return select @a as a '
end )
if @type = ' V '
set @sql1 = ' ALTER VIEW ' + @objectname + ' WITH ENCRYPTION AS SELECT 1 as f '
set @q = len ( @sql1 )
set @sql1 = @sql1 + REPLICATE ( ' - ' , 4000 - @q )
select @sql2 = REPLICATE ( ' - ' , 8000 )
set @sql3 = ' exec(@sql1 '
select @colid = max (colid) from # temp where number = @k
set @n = 1
while @n <= CEILING ( 1.0 * ( @colid - 1 ) / 2 ) and len ( @sql3 ) <= 3996
begin
set @sql3 = @sql3 + ' +@ '
set @n = @n + 1
end
set @sql3 = @sql3 + ' ) '
exec sp_executesql @sql3 ,N ' @sql1 nvarchar(4000),@ varchar(8000) ' , @sql1 = @sql1 ,@ = @sql2
end
set @k = @k + 1
end
set @k = 0
while @k <= @number
begin
if exists ( select 1 from syscomments where id = object_id ( @objectname ) and number = @k )
begin
select @colid = max (colid) from # temp where number = @k
set @n = 1
while @n <= @colid
begin
select @OrigSpText1 = ctext, @encrypted = encrypted, @status = status FROM # temp WHERE colid = @n and number = @k
SET @OrigSpText3 = ( SELECT ctext FROM syscomments WHERE id = object_id ( @objectname ) and colid = @n and number = @k )
if @n = 1
begin
if @type = ' P '
SET @OrigSpText2 = ( case when @number > 1 then ' CREATE PROCEDURE ' + @objectname + ' ; ' + rtrim ( @k ) + ' WITH ENCRYPTION AS '
else ' CREATE PROCEDURE ' + @objectname + ' WITH ENCRYPTION AS '
end )
if @type = ' FN ' or @type = ' TF ' or @type = ' IF '
SET @OrigSpText2 = ( case @type when ' TF ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
when ' FN ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns char(1) with encryption as begin return @a end '
when ' IF ' then
' CREATE FUNCTION ' + @objectname + ' (@a char(1)) returns table with encryption as return select @a as a '
end )
if @type = ' TR '
begin
if @tr_parent_xtype = ' V '
begin
set @OrigSpText2 = ' CREATE TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 '
end
else
begin
set @OrigSpText2 = ' CREATE TRIGGER ' + @objectname + ' ON ' + OBJECT_NAME ( @parentid ) + ' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
end
end
if @type = ' V '
set @OrigSpText2 = ' CREATE VIEW ' + @objectname + ' WITH ENCRYPTION AS SELECT 1 as f '
set @q = 4000 - len ( @OrigSpText2 )
set @OrigSpText2 = @OrigSpText2 + REPLICATE ( ' - ' , @q )
end
else
begin
SET @OrigSpText2 = REPLICATE ( ' - ' , 4000 )
end
SET @i = 1
SET @resultsp = replicate (N ' A ' , ( datalength ( @OrigSpText1 ) / 2 ))
WHILE @i <= datalength ( @OrigSpText1 ) / 2
BEGIN
SET @resultsp = stuff ( @resultsp , @i , 1 , NCHAR ( UNICODE ( substring ( @OrigSpText1 , @i , 1 )) ^
( UNICODE ( substring ( @OrigSpText2 , @i , 1 )) ^
UNICODE ( substring ( @OrigSpText3 , @i , 1 )))))
SET @i = @i + 1
END
set @orgvarbin = cast ( @OrigSpText1 as varbinary ( 8000 ))
set @resultsp = ( case when @encrypted = 1
then @resultsp
else convert ( nvarchar ( 4000 ), case when @status & 2 = 2 then uncompress( @orgvarbin ) else @orgvarbin end )
end )
print @resultsp
set @n = @n + 1
end
end
set @k = @k + 1
end
drop table # temp
rollback tran
end
sql server 2005/2008 解密 :
create
PROCEDURE
[
dbo
]
.
[
sp__windbi$decrypt
]
( @procedure sysname = NULL , @revfl int = 1 )
AS
SET NOCOUNT ON
IF @revfl = 1
BEGIN
PRINT ' 警告:该存储过程会删除并重建原始的存储过程。 '
PRINT ' 在运行该存储过程之前确保你的数据库有一个备份。 '
PRINT ' 该存储过程通常应该运行在产品环境的一个备份的非产品环境下。 '
PRINT ' 为了运行这个存储过程,将参数@refl的值更改为0。 '
RETURN 0
END
DECLARE @intProcSpace bigint , @t bigint , @maxColID smallint , @intEncrypted
tinyint , @procNameLength int
select @maxColID = max (subobjid), @intEncrypted = imageval FROM
sys.sysobjvalues WHERE objid = object_id ( @procedure )
GROUP BY imageval
-- select @maxColID as 'Rows in sys.sysobjvalues'
select @procNameLength = datalength ( @procedure ) + 29
DECLARE @real_01 nvarchar ( max )
DECLARE @fake_01 nvarchar ( max )
DECLARE @fake_encrypt_01 nvarchar ( max )
DECLARE @real_decrypt_01 nvarchar ( max ), @real_decrypt_01a nvarchar ( max )
declare @objtype varchar ( 2 ), @ParentName nvarchar ( max )
select @real_decrypt_01a = ''
-- 提取对象的类型如是存储过程还是函数,如果是触发器,还要得到其父对象的名称
select @objtype = type, @parentname = object_name (parent_object_id)
from sys.objects where [ object_id ] = object_id ( @procedure )
-- 从sys.sysobjvalues里提出加密的imageval记录
SET @real_01 = ( SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id ( @procedure ) and valclass = 1 order by subobjid)
-- 创建一个临时表
create table #output ( [ ident ] [ int ] IDENTITY ( 1 , 1 ) NOT NULL ,
[ real_decrypt ] NVARCHAR ( MAX ) )
-- 开始一个事务,稍后回滚
BEGIN TRAN
-- 更改原始的存储过程,用短横线替换
if @objtype = ' P '
SET @fake_01 = ' ALTER PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS
' + REPLICATE ( ' - ' , 40003 - @procNameLength )
else if @objtype = ' FN '
SET @fake_01 = ' ALTER FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' ALTER view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
else if @objtype = ' TR '
SET @fake_01 = ' ALTER trigger ' + @procedure + ' ON ' + @parentname + ' WITH ENCRYPTION AFTER INSERT AS RAISERROR ( '' N '' ,16,10)
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
EXECUTE ( @fake_01 )
-- 从sys.sysobjvalues里提出加密的假的
SET @fake_encrypt_01 = ( SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id ( @procedure ) and valclass = 1 order by subobjid )
if @objtype = ' P '
SET @fake_01 = ' Create PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS
' + REPLICATE ( ' - ' , 40003 - @procNameLength )
else if @objtype = ' FN '
SET @fake_01 = ' CREATE FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' Create view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
else if @objtype = ' TR '
SET @fake_01 = ' Create trigger ' + @procedure + ' ON ' + @parentname + ' WITH ENCRYPTION AFTER INSERT AS RAISERROR ( '' N '' ,16,10)
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
-- 开始计数
SET @intProcSpace = 1
-- 使用字符填充临时变量
SET @real_decrypt_01 = replicate (N ' A ' , ( datalength ( @real_01 ) / 2 ))
-- 循环设置每一个变量,创建真正的变量
-- 每次一个字节
SET @intProcSpace = 1
-- 如有必要,遍历每个@real_xx变量并解密
WHILE @intProcSpace <= ( datalength ( @real_01 ) / 2 )
BEGIN
-- 真的和假的和加密的假的进行异或处理
SET @real_decrypt_01 = stuff ( @real_decrypt_01 , @intProcSpace , 1 ,
NCHAR ( UNICODE ( substring ( @real_01 , @intProcSpace , 1 )) ^
( UNICODE ( substring ( @fake_01 , @intProcSpace , 1 )) ^
UNICODE ( substring ( @fake_encrypt_01 , @intProcSpace , 1 )))))
SET @intProcSpace = @intProcSpace + 1
END
-- 通过sp_helptext逻辑向表#output里插入变量
insert #output (real_decrypt) select @real_decrypt_01
-- select real_decrypt AS '#output chek' from #output --测试
-- -------------------------------------
-- 开始从sp_helptext提取
-- -------------------------------------
declare @dbname sysname
, @BlankSpaceAdded int
, @BasePos int
, @CurrentPos int
, @TextLength int
, @LineId int
, @AddOnLen int
, @LFCR int -- 回车换行的长度
, @DefinedLength int
, @SyscomText nvarchar ( 4000 )
, @Line nvarchar ( 255 )
Select @DefinedLength = 255
SELECT @BlankSpaceAdded = 0 -- 跟踪行结束的空格。注意Len函数忽略了多余的空格
CREATE TABLE #CommentText
(LineId int
, Text nvarchar ( 255 ) collate database_default)
-- 使用#output代替sys.sysobjvalues
DECLARE ms_crs_syscom CURSOR LOCAL
FOR SELECT real_decrypt from #output
ORDER BY ident
FOR READ ONLY
-- 获取文本
SELECT @LFCR = 2
SELECT @LineId = 1
OPEN ms_crs_syscom
FETCH NEXT FROM ms_crs_syscom into @SyscomText
WHILE @@fetch_status >= 0
BEGIN
SELECT @BasePos = 1
SELECT @CurrentPos = 1
SELECT @TextLength = LEN ( @SyscomText )
WHILE @CurrentPos != 0
BEGIN
-- 通过回车查找行的结束
SELECT @CurrentPos = CHARINDEX ( char ( 13 ) + char ( 10 ), @SyscomText ,
@BasePos )
-- 如果找到回车
IF @CurrentPos != 0
BEGIN
-- 如果@Lines的长度的新值比设置的大就插入@Lines目前的内容并继续
While ( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded +
@CurrentPos - @BasePos + @LFCR ) > @DefinedLength
BEGIN
SELECT @AddOnLen = @DefinedLength - ( isnull ( LEN ( @Line ), 0 ) +
@BlankSpaceAdded )
INSERT #CommentText VALUES
( @LineId ,
isnull ( @Line , N '' ) + isnull ( SUBSTRING ( @SyscomText ,
@BasePos , @AddOnLen ), N '' ))
SELECT @Line = NULL , @LineId = @LineId + 1 ,
@BasePos = @BasePos + @AddOnLen , @BlankSpaceAdded = 0
END
SELECT @Line = isnull ( @Line , N '' ) +
isnull ( SUBSTRING ( @SyscomText , @BasePos , @CurrentPos - @BasePos + @LFCR ), N '' )
SELECT @BasePos = @CurrentPos + 2
INSERT #CommentText VALUES ( @LineId , @Line )
SELECT @LineId = @LineId + 1
SELECT @Line = NULL
END
ELSE
-- 如果回车没找到
BEGIN
IF @BasePos <= @TextLength
BEGIN
-- 如果@Lines长度的新值大于定义的长度
While ( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded +
@TextLength - @BasePos + 1 ) > @DefinedLength
BEGIN
SELECT @AddOnLen = @DefinedLength -
( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded )
INSERT #CommentText VALUES
( @LineId ,
isnull ( @Line , N '' ) + isnull ( SUBSTRING ( @SyscomText ,
@BasePos , @AddOnLen ), N '' ))
SELECT @Line = NULL , @LineId = @LineId + 1 ,
@BasePos = @BasePos + @AddOnLen , @BlankSpaceAdded =
0
END
SELECT @Line = isnull ( @Line , N '' ) +
isnull ( SUBSTRING ( @SyscomText , @BasePos , @TextLength - @BasePos + 1 ), N '' )
if LEN ( @Line ) < @DefinedLength and charindex ( ' ' ,
@SyscomText , @TextLength + 1 ) > 0
BEGIN
SELECT @Line = @Line + ' ' , @BlankSpaceAdded = 1
END
END
END
END
FETCH NEXT FROM ms_crs_syscom into @SyscomText
END
IF @Line is NOT NULL
INSERT #CommentText VALUES ( @LineId , @Line )
select Text from #CommentText order by LineId
CLOSE ms_crs_syscom
DEALLOCATE ms_crs_syscom
DROP TABLE #CommentText
-- -------------------------------------
-- 结束从sp_helptext提取
-- -------------------------------------
-- 删除用短横线创建的存储过程并重建原始的存储过程
ROLLBACK TRAN
DROP TABLE #output
( @procedure sysname = NULL , @revfl int = 1 )
AS
SET NOCOUNT ON
IF @revfl = 1
BEGIN
PRINT ' 警告:该存储过程会删除并重建原始的存储过程。 '
PRINT ' 在运行该存储过程之前确保你的数据库有一个备份。 '
PRINT ' 该存储过程通常应该运行在产品环境的一个备份的非产品环境下。 '
PRINT ' 为了运行这个存储过程,将参数@refl的值更改为0。 '
RETURN 0
END
DECLARE @intProcSpace bigint , @t bigint , @maxColID smallint , @intEncrypted
tinyint , @procNameLength int
select @maxColID = max (subobjid), @intEncrypted = imageval FROM
sys.sysobjvalues WHERE objid = object_id ( @procedure )
GROUP BY imageval
-- select @maxColID as 'Rows in sys.sysobjvalues'
select @procNameLength = datalength ( @procedure ) + 29
DECLARE @real_01 nvarchar ( max )
DECLARE @fake_01 nvarchar ( max )
DECLARE @fake_encrypt_01 nvarchar ( max )
DECLARE @real_decrypt_01 nvarchar ( max ), @real_decrypt_01a nvarchar ( max )
declare @objtype varchar ( 2 ), @ParentName nvarchar ( max )
select @real_decrypt_01a = ''
-- 提取对象的类型如是存储过程还是函数,如果是触发器,还要得到其父对象的名称
select @objtype = type, @parentname = object_name (parent_object_id)
from sys.objects where [ object_id ] = object_id ( @procedure )
-- 从sys.sysobjvalues里提出加密的imageval记录
SET @real_01 = ( SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id ( @procedure ) and valclass = 1 order by subobjid)
-- 创建一个临时表
create table #output ( [ ident ] [ int ] IDENTITY ( 1 , 1 ) NOT NULL ,
[ real_decrypt ] NVARCHAR ( MAX ) )
-- 开始一个事务,稍后回滚
BEGIN TRAN
-- 更改原始的存储过程,用短横线替换
if @objtype = ' P '
SET @fake_01 = ' ALTER PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS
' + REPLICATE ( ' - ' , 40003 - @procNameLength )
else if @objtype = ' FN '
SET @fake_01 = ' ALTER FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' ALTER view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
else if @objtype = ' TR '
SET @fake_01 = ' ALTER trigger ' + @procedure + ' ON ' + @parentname + ' WITH ENCRYPTION AFTER INSERT AS RAISERROR ( '' N '' ,16,10)
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
EXECUTE ( @fake_01 )
-- 从sys.sysobjvalues里提出加密的假的
SET @fake_encrypt_01 = ( SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id ( @procedure ) and valclass = 1 order by subobjid )
if @objtype = ' P '
SET @fake_01 = ' Create PROCEDURE ' + @procedure + ' WITH ENCRYPTION AS
' + REPLICATE ( ' - ' , 40003 - @procNameLength )
else if @objtype = ' FN '
SET @fake_01 = ' CREATE FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' Create view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
else if @objtype = ' TR '
SET @fake_01 = ' Create trigger ' + @procedure + ' ON ' + @parentname + ' WITH ENCRYPTION AFTER INSERT AS RAISERROR ( '' N '' ,16,10)
/* ' + REPLICATE ( ' * ' , datalength ( @real_01 ) / 2 - @procNameLength ) + ' */ '
-- 开始计数
SET @intProcSpace = 1
-- 使用字符填充临时变量
SET @real_decrypt_01 = replicate (N ' A ' , ( datalength ( @real_01 ) / 2 ))
-- 循环设置每一个变量,创建真正的变量
-- 每次一个字节
SET @intProcSpace = 1
-- 如有必要,遍历每个@real_xx变量并解密
WHILE @intProcSpace <= ( datalength ( @real_01 ) / 2 )
BEGIN
-- 真的和假的和加密的假的进行异或处理
SET @real_decrypt_01 = stuff ( @real_decrypt_01 , @intProcSpace , 1 ,
NCHAR ( UNICODE ( substring ( @real_01 , @intProcSpace , 1 )) ^
( UNICODE ( substring ( @fake_01 , @intProcSpace , 1 )) ^
UNICODE ( substring ( @fake_encrypt_01 , @intProcSpace , 1 )))))
SET @intProcSpace = @intProcSpace + 1
END
-- 通过sp_helptext逻辑向表#output里插入变量
insert #output (real_decrypt) select @real_decrypt_01
-- select real_decrypt AS '#output chek' from #output --测试
-- -------------------------------------
-- 开始从sp_helptext提取
-- -------------------------------------
declare @dbname sysname
, @BlankSpaceAdded int
, @BasePos int
, @CurrentPos int
, @TextLength int
, @LineId int
, @AddOnLen int
, @LFCR int -- 回车换行的长度
, @DefinedLength int
, @SyscomText nvarchar ( 4000 )
, @Line nvarchar ( 255 )
Select @DefinedLength = 255
SELECT @BlankSpaceAdded = 0 -- 跟踪行结束的空格。注意Len函数忽略了多余的空格
CREATE TABLE #CommentText
(LineId int
, Text nvarchar ( 255 ) collate database_default)
-- 使用#output代替sys.sysobjvalues
DECLARE ms_crs_syscom CURSOR LOCAL
FOR SELECT real_decrypt from #output
ORDER BY ident
FOR READ ONLY
-- 获取文本
SELECT @LFCR = 2
SELECT @LineId = 1
OPEN ms_crs_syscom
FETCH NEXT FROM ms_crs_syscom into @SyscomText
WHILE @@fetch_status >= 0
BEGIN
SELECT @BasePos = 1
SELECT @CurrentPos = 1
SELECT @TextLength = LEN ( @SyscomText )
WHILE @CurrentPos != 0
BEGIN
-- 通过回车查找行的结束
SELECT @CurrentPos = CHARINDEX ( char ( 13 ) + char ( 10 ), @SyscomText ,
@BasePos )
-- 如果找到回车
IF @CurrentPos != 0
BEGIN
-- 如果@Lines的长度的新值比设置的大就插入@Lines目前的内容并继续
While ( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded +
@CurrentPos - @BasePos + @LFCR ) > @DefinedLength
BEGIN
SELECT @AddOnLen = @DefinedLength - ( isnull ( LEN ( @Line ), 0 ) +
@BlankSpaceAdded )
INSERT #CommentText VALUES
( @LineId ,
isnull ( @Line , N '' ) + isnull ( SUBSTRING ( @SyscomText ,
@BasePos , @AddOnLen ), N '' ))
SELECT @Line = NULL , @LineId = @LineId + 1 ,
@BasePos = @BasePos + @AddOnLen , @BlankSpaceAdded = 0
END
SELECT @Line = isnull ( @Line , N '' ) +
isnull ( SUBSTRING ( @SyscomText , @BasePos , @CurrentPos - @BasePos + @LFCR ), N '' )
SELECT @BasePos = @CurrentPos + 2
INSERT #CommentText VALUES ( @LineId , @Line )
SELECT @LineId = @LineId + 1
SELECT @Line = NULL
END
ELSE
-- 如果回车没找到
BEGIN
IF @BasePos <= @TextLength
BEGIN
-- 如果@Lines长度的新值大于定义的长度
While ( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded +
@TextLength - @BasePos + 1 ) > @DefinedLength
BEGIN
SELECT @AddOnLen = @DefinedLength -
( isnull ( LEN ( @Line ), 0 ) + @BlankSpaceAdded )
INSERT #CommentText VALUES
( @LineId ,
isnull ( @Line , N '' ) + isnull ( SUBSTRING ( @SyscomText ,
@BasePos , @AddOnLen ), N '' ))
SELECT @Line = NULL , @LineId = @LineId + 1 ,
@BasePos = @BasePos + @AddOnLen , @BlankSpaceAdded =
0
END
SELECT @Line = isnull ( @Line , N '' ) +
isnull ( SUBSTRING ( @SyscomText , @BasePos , @TextLength - @BasePos + 1 ), N '' )
if LEN ( @Line ) < @DefinedLength and charindex ( ' ' ,
@SyscomText , @TextLength + 1 ) > 0
BEGIN
SELECT @Line = @Line + ' ' , @BlankSpaceAdded = 1
END
END
END
END
FETCH NEXT FROM ms_crs_syscom into @SyscomText
END
IF @Line is NOT NULL
INSERT #CommentText VALUES ( @LineId , @Line )
select Text from #CommentText order by LineId
CLOSE ms_crs_syscom
DEALLOCATE ms_crs_syscom
DROP TABLE #CommentText
-- -------------------------------------
-- 结束从sp_helptext提取
-- -------------------------------------
-- 删除用短横线创建的存储过程并重建原始的存储过程
ROLLBACK TRAN
DROP TABLE #output