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dotnet security
group:Access to remote registry (RegistryPermissionAttribute)
dotnet security:
I'm trying to access a registry key on a remote computer. Here is my code : [RegistryPermissionAttribute(SecurityAction.RequestMinimum, Read = @"HKEY_LOCAL_MACHINE\SOFTWARE\MyKey")] public static string ReadRegistryKey(string PsMachineName) { try { RegistryKey LoKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, PsMachineName); RegistryKey LoSubKey = LoKey.OpenSubKey(@"SOFTWARE\MyKey"); string LsValue = LoSubKey.GetValue("InstallFolder").ToString(); return LsValue; } catch(Exception e) { return e.Message; } } This code does not compile !!! Error : Error emitting 'System.Security.Permissions.RegistryPermissionAttribute' attribute -- 'Common Language Runtime Internal error: 0x8013143e' Could anyone tell me what I'm doing wrong or how I can fix this !? Thanks a lot. Marc
Hi Marc,
The problem seems to be that you're emitting assembly-level declarative security onto a method. RequestMinimum can only be done on a per-assembly basis, so if you add an assembly: qualifier to your attribute, then you should be able to compile the code. As an aside -- what version of the CLR are you seeing this behavior on? -Shawn http://blogs.msdn.com/shawnfa -- This posting is provided "AS IS" with no warranties, and confers no rights. Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they originated. -------------------- [quoted text, click to view] >From: "Marc Wuergler" <marc_wurgler@hotmail.com> >Subject: Access to remote registry (RegistryPermissionAttribute) >Date: Fri, 20 Aug 2004 15:20:32 +0200 >Lines: 38 >X-Priority: 3 >X-MSMail-Priority: Normal >X-Newsreader: Microsoft Outlook Express 6.00.2800.1437 >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 >Message-ID: <OqKV7hrhEHA.712@tk2msftngp13.phx.gbl> >Newsgroups: microsoft.public.dotnet.security >NNTP-Posting-Host: mail.infoteam.ch 193.192.226.200 >Path: cpmsftngxa10.phx.gbl!TK2MSFTFEED01.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13.phx.gbl >Xref: cpmsftngxa10.phx.gbl microsoft.public.dotnet.security:7185 >X-Tomcat-NG: microsoft.public.dotnet.security > >Hi ! > >I'm trying to access a registry key on a remote computer. > >Here is my code : > >[RegistryPermissionAttribute(SecurityAction.RequestMinimum, Read = >@"HKEY_LOCAL_MACHINE\SOFTWARE\MyKey")] >public static string ReadRegistryKey(string PsMachineName) >{ > try > { > RegistryKey LoKey = >RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, PsMachineName); > RegistryKey LoSubKey = LoKey.OpenSubKey(@"SOFTWARE\MyKey"); > string LsValue = LoSubKey.GetValue("InstallFolder").ToString(); > > return LsValue; > } > catch(Exception e) > { > return e.Message; > } >} > >This code does not compile !!! > >Error : Error emitting >'System.Security.Permissions.RegistryPermissionAttribute' attribute -- >'Common Language Runtime Internal error: 0x8013143e' > > >Could anyone tell me what I'm doing wrong or how I can fix this !? Thanks a >lot. > >Marc > > >
Hi Shawn !
Thanks for your reply. The version of my clr is 1.1.4322.573. If I use Demand instead of RequestMinimum, my code compiles. But if I add assembly:, there is no way to compile. Now, with that attribute, I can access the registry key only with my domain user. I used regedt32 to give access rights to a local user of the machine (it's a user that I created to use with impersonation from my web app). But even if I give full control access to the registry key, my request is refused. Do you have any ideas how I could do this ? Thanks for your reply Marc ""Shawn Farkas"" <shawnfa@online.microsoft.com> a écrit dans le message de news:MicfNkwhEHA.304@cpmsftngxa10.phx.gbl... [quoted text, click to view] > Hi Marc, cpmsftngxa10.phx.gbl!TK2MSFTFEED01.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13> > The problem seems to be that you're emitting assembly-level declarative security onto a method. RequestMinimum can only be done on > a per-assembly basis, so if you add an assembly: qualifier to your attribute, then you should be able to compile the code. As an aside -- what > version of the CLR are you seeing this behavior on? > > -Shawn > http://blogs.msdn.com/shawnfa > > -- > > This posting is provided "AS IS" with no warranties, and confers no rights. > Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they > originated. > -------------------- > >From: "Marc Wuergler" <marc_wurgler@hotmail.com> > >Subject: Access to remote registry (RegistryPermissionAttribute) > >Date: Fri, 20 Aug 2004 15:20:32 +0200 > >Lines: 38 > >X-Priority: 3 > >X-MSMail-Priority: Normal > >X-Newsreader: Microsoft Outlook Express 6.00.2800.1437 > >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 > >Message-ID: <OqKV7hrhEHA.712@tk2msftngp13.phx.gbl> > >Newsgroups: microsoft.public.dotnet.security > >NNTP-Posting-Host: mail.infoteam.ch 193.192.226.200 > >Path: ..phx.gbl [quoted text, click to view] > >Xref: cpmsftngxa10.phx.gbl microsoft.public.dotnet.security:7185 > >X-Tomcat-NG: microsoft.public.dotnet.security > > > >Hi ! > > > >I'm trying to access a registry key on a remote computer. > > > >Here is my code : > > > >[RegistryPermissionAttribute(SecurityAction.RequestMinimum, Read = > >@"HKEY_LOCAL_MACHINE\SOFTWARE\MyKey")] > >public static string ReadRegistryKey(string PsMachineName) > >{ > > try > > { > > RegistryKey LoKey = > >RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, PsMachineName); > > RegistryKey LoSubKey = LoKey.OpenSubKey(@"SOFTWARE\MyKey"); > > string LsValue = LoSubKey.GetValue("InstallFolder").ToString(); > > > > return LsValue; > > } > > catch(Exception e) > > { > > return e.Message; > > } > >} > > > >This code does not compile !!! > > > >Error : Error emitting > >'System.Security.Permissions.RegistryPermissionAttribute' attribute -- > >'Common Language Runtime Internal error: 0x8013143e' > > > > > >Could anyone tell me what I'm doing wrong or how I can fix this !? Thanks a > >lot. > > > >Marc > > > > > > > >
OK ... I got it ...
To access the registry key with a specific user, I need to give that user access to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ SecurePipeServers\winreg of the remote machine.... ""Shawn Farkas"" <shawnfa@online.microsoft.com> a écrit dans le message de news:MicfNkwhEHA.304@cpmsftngxa10.phx.gbl... [quoted text, click to view] > Hi Marc, cpmsftngxa10.phx.gbl!TK2MSFTFEED01.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13> > The problem seems to be that you're emitting assembly-level declarative security onto a method. RequestMinimum can only be done on > a per-assembly basis, so if you add an assembly: qualifier to your attribute, then you should be able to compile the code. As an aside -- what > version of the CLR are you seeing this behavior on? > > -Shawn > http://blogs.msdn.com/shawnfa > > -- > > This posting is provided "AS IS" with no warranties, and confers no rights. > Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they > originated. > -------------------- > >From: "Marc Wuergler" <marc_wurgler@hotmail.com> > >Subject: Access to remote registry (RegistryPermissionAttribute) > >Date: Fri, 20 Aug 2004 15:20:32 +0200 > >Lines: 38 > >X-Priority: 3 > >X-MSMail-Priority: Normal > >X-Newsreader: Microsoft Outlook Express 6.00.2800.1437 > >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 > >Message-ID: <OqKV7hrhEHA.712@tk2msftngp13.phx.gbl> > >Newsgroups: microsoft.public.dotnet.security > >NNTP-Posting-Host: mail.infoteam.ch 193.192.226.200 > >Path: ..phx.gbl [quoted text, click to view] > >Xref: cpmsftngxa10.phx.gbl microsoft.public.dotnet.security:7185 > >X-Tomcat-NG: microsoft.public.dotnet.security > > > >Hi ! > > > >I'm trying to access a registry key on a remote computer. > > > >Here is my code : > > > >[RegistryPermissionAttribute(SecurityAction.RequestMinimum, Read = > >@"HKEY_LOCAL_MACHINE\SOFTWARE\MyKey")] > >public static string ReadRegistryKey(string PsMachineName) > >{ > > try > > { > > RegistryKey LoKey = > >RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, PsMachineName); > > RegistryKey LoSubKey = LoKey.OpenSubKey(@"SOFTWARE\MyKey"); > > string LsValue = LoSubKey.GetValue("InstallFolder").ToString(); > > > > return LsValue; > > } > > catch(Exception e) > > { > > return e.Message; > > } > >} > > > >This code does not compile !!! > > > >Error : Error emitting > >'System.Security.Permissions.RegistryPermissionAttribute' attribute -- > >'Common Language Runtime Internal error: 0x8013143e' > > > > > >Could anyone tell me what I'm doing wrong or how I can fix this !? Thanks a > >lot. > > > >Marc > > > > > > > >
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