问题一: DAC连接问题
自己尝试了n次,最后总结一下连接步骤:
1 先用有sysadmin角色的用户登陆SQL Server Management Studio;
2 在工具栏上选数据库引擎查询;服务器名称改为 ADMIN:服务器名称 ;选项>连接属性>连接到数据库 改为加密存储过程所在的数据库;连接
3 运行解密的存储过程;
问题二: 可用的存储过程解密代码
SQLServer2005里怎样对使用with encryption选项创建的存储过程解密
--王成辉翻译整理,转贴请注明出自微软BI开拓者www.windbi.com
--原帖地址
SQLServer2005里使用with encryption选项创建的存储过程仍然和sqlserver2000里一样,都是使用XOR进行了的加密。和2000不一样的是,在2005的系统表syscomments里已经查不到加密过的密文了。要查密文必须使用DAC(专用管理员连接)连接到数据库后,在系统表sys.sysobjvalues查询,该表的列imageval存储了相应的密文。具体可以使用下面的查询:
SELECT imageval FROM sys.sysobjvalues WHERE objid = object_id(@procedure) AND
valclass = 1 AND subobjid = 1
下面是解密的存储过程,具体代码如下(这是版本4.0,最新的,修正很长的存储过程解密出来是空白的问题):
Create
PROCEDURE
[
dbo
].
[
sp__windbi$decrypt
]
( @procedure sysname = NULL, @revfl int = 1)
AS
/*
王成辉翻译整理,转贴请注明出自微软BI开拓者www.windbi.com
调用形式为:
exec dbo.sp__windbi$decrypt @procedure,0
如果第二个参数使用1的话,会给出该存储过程的一些提示。
--版本4.0 修正存储过程过长解密出来是空白的问题
*/
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, @procNameLength int
select @maxColID = max(subobjid) FROM
sys.sysobjvalues WHERE objid = object_id( @procedure)
-- 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 select 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ '
else if @objtype = ' FN '
SET @fake_01 = ' ALTER FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' ALTER view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), 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( cast( ' * ' as nvarchar( max)), 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 select 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ '
else if @objtype = ' FN '
SET @fake_01 = ' CREATE FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' Create view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), 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( cast( ' * ' as nvarchar( max)), 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( cast( ' A ' as nvarchar( max)), ( 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( max)
, @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
go
( @procedure sysname = NULL, @revfl int = 1)
AS
/*
王成辉翻译整理,转贴请注明出自微软BI开拓者www.windbi.com
调用形式为:
exec dbo.sp__windbi$decrypt @procedure,0
如果第二个参数使用1的话,会给出该存储过程的一些提示。
--版本4.0 修正存储过程过长解密出来是空白的问题
*/
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, @procNameLength int
select @maxColID = max(subobjid) FROM
sys.sysobjvalues WHERE objid = object_id( @procedure)
-- 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 select 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ '
else if @objtype = ' FN '
SET @fake_01 = ' ALTER FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' ALTER view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), 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( cast( ' * ' as nvarchar( max)), 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 select 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ '
else if @objtype = ' FN '
SET @fake_01 = ' CREATE FUNCTION ' + @procedure + ' () RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), datalength( @real_01) / 2 - @procNameLength) + ' */ END '
else if @objtype = ' V '
SET @fake_01 = ' Create view ' + @procedure + ' WITH ENCRYPTION AS select 1 as col
/* ' + REPLICATE( cast( ' * ' as nvarchar( max)), 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( cast( ' * ' as nvarchar( max)), 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( cast( ' A ' as nvarchar( max)), ( 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( max)
, @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
go
ALTER
PROCEDURE
[
dbo
].
[
sp__windbi$decrypt
]
( @procedure sysname = NULL, @revfl int = 1)
AS
/*
王成辉翻译整理,转贴请注明出自微软BI开拓者www.windbi.com
目前这个存储过程只能解密存储过程,至于解密函数、触发器、视图的存储过程本网站会进一步关注,调用形式为:
exec dbo.sp__windbi$decrypt @procedure,0
如果第二个参数使用1的话,会给出该存储过程的一些提示。
--版本2.0
*/
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
/*
王成辉翻译整理,转贴请注明出自微软BI开拓者www.windbi.com
目前这个存储过程只能解密存储过程,至于解密函数、触发器、视图的存储过程本网站会进一步关注,调用形式为:
exec dbo.sp__windbi$decrypt @procedure,0
如果第二个参数使用1的话,会给出该存储过程的一些提示。
--版本2.0
*/
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