SharePoint site security: how can I programmatically monitor changes? - security

I have a case where if a SharePoint site owner decides to break permissions inheritance and directly manage site membership, I'd also like to correspondingly modify view permissions on items in a specific list in the top-level site.
How can I best catch those changes so I know when to apply the appropriate changes to the list items?
I'd like to have some C# code be notified when a site's permissions are changed so I can programmatically modify the appropriate list item permissions.

The best way to do this (unfortunately) is to periodically query all of the sites and check to see if inheritance is disabled. I had a similar problem and used powershell scripting to create a report on site security. If you haven't used Powershell before, don't be intimidated. The syntax is VERY similar to C#.

You can use SharePoint auditing to monitor permission changes. It will track changes down to item level. The downside is that you have to turn this feature on and it will hurt performance somewhat.
As for notification, I don't think auditing tells you about changes. I'm pretty sure you would need to poll the audit log.
There's heaps of information about auditing in this article on MSDN.

Another approach which I think might do a very good job of this is to use the SharePoint ChangeLog. Bascially, this is used by SharePoint during indexing, with the log telling the gatherer exactly what has changed, and what should be indexed during an incremental crawl.
When you have a permission change, then this should be picked up during an incremental crawl. The ChangeLog has specific parameters that can be passed to identify changes to permissions. Take a look here at the SPChangeQuery Class:
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spchangequery.aspx
Specifically you can look for ChangeTypes:
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spchangetype.aspx
Including:
AssignmentAdd
AssignmentDelete
MemberAdd
MemberDelete
...and more

Related

Category wise access to user

We are having a requirement according to which the access on the Web contents is to be given on the basis of categories.
Example: (i.e): if a role Report is being given to a user, then the user should be able to view only those web contents which are associated with the Report category.
How can this be achieved with liferay 6.2?
The UI will have nothing for you, as this is not the typical way that Liferay handles permissions. There are several options that you can choose from:
First of all you should check why this requirement exists: Quite often I'm seeing permissions being used where "relevance" is actually the way to go: Check if users absolutely must not see content from other categories, or if it would just be irrelevant for them. Don't use permissions to solve "relevance" problems.
My favored solution would be that you determine this is the case. If it isn't here are some other options that you have:
Liferay's permissions work best (and best maintainable) if you separate content with different permissions into different sites. This way you can use the easiest bulk permissions. You can create all the different content in different sites and still show them on other sites - e.g. through AssetPublisher or custom portlets.
You can also create a Hook that automatically sets the required permissions whenever an article is saved. Liferay's API is available and can be overridden with the required operation. In fact, you won't override, but rather add to the standard behaviour.

Restricting Views of users on Sharepoint lists

I am developing a sharepoint 2010 project.
I want to restrict users view on lists based on their identity. (e.g. the branch of organization they work in, but in fact the ristrictions can be more complicated).
What solutions do you recommend?
With out of the box features this is not possible. You can go to great lengths to remove the list's view selectors and other navigational elements that let people cruise around a the schema and metadata for a list but it is not a security mechanism.
If a user has read permissions to an item, they'll have read access to all the fields of that item.
There is an outside chance that it you disabled all RPC mechanisms, SOAP, RESTful web services, Client Object Model and the office clients that you might be able to claim this as a security mechanism. If you don't there will always be a way around your "security" scheme.
This feature can't be implemented by SharePoint by now and I think neither for the next version
You can use a third part tool to achieve it, such as BoostSolutions' Column/View Permission or LightningTools' DeliverPoint
BTW, I work for BoostSolutions and I mentioned our own product because it works for your issue. Hope it helps :)
create sharepoint groups based upon your requirement or diffrent type of user base and accordingly give them rights may be item level or on complete list
and while doing these things just go through the following posts
http://blogs.gartner.com/neil_macdonald/2009/02/25/sharepoint-security-best-practices/
http://weblogs.asp.net/erobillard/archive/2008/09/11/sharepoint-security-hard-limits-and-recommended-practices.aspx
Not 100% sure on SharePoint 2010, but definitley for SharePoint 2007, there is not a way to do this, especially if the views are corresponding to security requirements on the columns users are able to see.
One way to work around this is have the list be not accessible by users, and then have code logic allow for access to the data creating the different "views" on the data in something like a Web Part. The downsides to this is search becomes an issue (since the data is hidden) and having multiple "views" of the data (if necessary) is also another item to work through.
I know its a very old question but posting it as it might help someone.
There is an work around to do it as described here
I find it easier, if possible, to create the view and lock it with the filters on the list settings page.
For example, I have a list of employees that includes their employee IDs. I use that list on other pages to gather data in other webparts. So I filter the employee list to [ME]. So the data is available to the page needing it to filter others and they cannot see anything else.
Now, what about the person who needs to manage that page? I create a view, call it HR. That view can see everything. Then I export that webpart with that list view on it through the designer. I then delete the HR view from the employee list.
This leaves no way for anyone to switch views and see everything again. I create a webpart page for the person who manages it, and I upload that webpart and set the view of the webpart to HR. In the end, I have a page that I lock down instead of trying to lock down views or list permissions separately.
Would you be able to have two lists that are joined. One that all users have access to and another that only certain people have access to, and then join them? Then maybe the people that don't have access to the other table it doesn't pull the information? Not sure, but I'll try that out later today.

Prevent site deletion

In our Sharepoint implementation users have been granted site collection admin rights. On a few occasions they've managed to delete a subsite or even the entire site collection. I'd like to be able to block this but not being a developer I'm finding it pretty tricky.
I've had a look at the MSIT site delete capture tool to try to understand how that's working and it seams fairly straight forward. I want to override the delete function and either block it entirely or have the user type a password. What I can't see is any way to fully override the default behavior as it looks like the MSIT tool simply adds some functionality (backs up the site) then falls back into the default behavior.
So my question is, can I prevent the default behavior or can I only add actions before or after it fires?
Thanks in advance
Change the user permissions may be the best way to go. site collection admin is a crazy level of access for normal users.
Two answers:
You cannot prevent site deletes without either coding up something yourself, or buying a product to help you with "site lifecycle management" or "site governance" or some other vague term they use to describe this sort of thing.
The Site Delete Capture Tool may be good enough for you. It doesn't prevent any kind of deletions, but it does take a crude backup that (hopefully) allows you to restore anything they delete. We're using this tool in production and it works.
You could try to edit the site settings aspx file and comment out the delete site link, don't have a setup around to try that. While users could delete the site in other ways it would prevent the most common method.
Other option for important sites would be to make sure the site has a sub-site, if one does not already exist create one and don't user any access. The site would not be seen by the users and it would prevent them from deleting the parent site.
As for programming, in the before behavior you can return a false to stop the action. Just be sure to place a work around so you can delete a site.
A Site Collection administrator has the permission to delete sites and it should stay that way. We have modified MSIT to do additional stuff
The best way to limit user privileges is to put users in the right SharePoint group (ie) Owners, Members, Visitors or you could create a new group with right permission/permission levels.

Defaulting WebParts on a Users MySite in Sharepoint

I am working on a project that is replacing an old portal system (Plumtree) with sharepoint and we want to make the transition as smooth as possible.
One thing we are look at currently is taking all the gadgets (Plumtree term for WebParts) and making sure they appear in the same place on the users new MySite.
Plumtree holds this information in a simple table containing the user, page, gadget and position information. I want to find a way to automate reading this table and putting the new WebParts on the users MySite and not have to manually set it up for hundreds of users.
I'm told modifying Sharepoint tables in SQL Server directly is not a good option as it may affect our support arrangements, but if it saves doing this by hand then I would concider it.
Other options that spring to mind are creating a equivalent table and using API calls to load the WebParts the first time the user accesses their MySite.
Any better suggestions?
You are right, messing directly with databases are not supported nor recommended.
Unfortunately, there are not much ways to modify MySites, the best way I know come from the MOSS Team Blog: http://blogs.msdn.com/sharepoint/archive/2007/03/22/customizing-moss-2007-my-sites-within-the-enterprise.aspx
The way we did it was pretty much what is described in the link above (http://blogs.msdn.com/sharepoint/archive/2007/03/22/customizing-moss-2007-my-sites-within-the-enterprise.aspx).
Your best bet is probably to staple a Feature to MySite creation and have it poll the plumtree database, find the gadgets for that user, and add a 'Page Viewer' web part for each, pointing to the gadget's location. That said, you may want to reconsider blindly migrating all your plumtree gadgets into SharePoint. There may be much better 'SharePointy' ways to provide the functionality that your gadgets are currently providing.

What's the best way to report errors from a SharePoint workflow?

I have a custom action in a workflow and would like to report an error to the user when something goes wrong. What's the best way of doing that?
UPD: Ideally I would like to put the workflow in the error state and log a message to the workflow log. That doesn't seem possible. What's the closest I can get to it? I want to a reusable solution,something that's easy for users to set up when using my custom action in SharePoint Designer.
Added more details to the question.
#mauro that takes care of storing the error, but how do I display the error to the user in a way which makes sense?
#AdamSane That's seems like a rather fragile solution. It's not a matter of setting this up once on a single site. I need something others can add using SPD.
when you throw the error your error handler can then email the user, or better if the list is massive, add the error state to the workflow item - i think this is default functionality though as the error would be mentioned there.
http://www.sharepointsecurity.com/blog/sharepoint/sharepoint-2007-development/fault-handling-in-sharepoint-workflows/
Personally I would log it to either a log file or the event log depending on the issue. I think storing it using a users permissions would be a bad idea, what happens if that user does not have the correct rights? or worse still they get elevated permissions by browsing the list in explorer view?
The log file would be the best way, that way you rely only on the file system being available - you dont have to worry about trapping errors happening whilst connecting to the database etc.
Mauro
Add the error to a hidden list with that users name. Set the visibility on the list (for users) to only read/write their own values. Then use a custom web part or FlexListViewer to view the contents of that list and display it to the user. Once they acknowledge that error, remove it from the list.
If necessary, you can add a different workflow action on that message list, that says pause for 2 days and then email. Whatever, depending on your requirements.
Otherwise you can have a custom db table that you use for pretty much the same thing, this way sharepoint does most of the work for you.
Update This can be packaged up as a feature and deployed to each site as needed. The strengths of this approach (adding a list item to a list, querying, alerting a user, and emailing a user) are all built into the sharepoint itself. In this case you can focus on your custom logic only, while letting sharepoint focus on the implementation details.
If you need the user to take some action as a result of the error (e.g. retrying the workflow) is it possible to create a task for that user with information on the error and the location of the workflow?

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