Would someone be able to point me to the C++ API's that I can use to display a list of processes and the user name in Windows?
My current code uses the CreateToolhelp32Snapshot Function which shows all the processes running for all users, but I do not know what API's to use to retreieve the user name so I can filter it by user. I do not need to use CreateToolhelp32Snapshot, and I have seen other methods to retrieve the process list, but none seem to get me the user name that is running the process.
Thanks for any help.
I know that using GetTokenInformation with TokenUser gets you the SID, and a quick serach reveals that LookupAccountSid should get you the corresponding account. Havent't tried that last one myself though.
Well this link appears to have helpful code for you. Apply the code contained there in to the Token handle you get from calling OpenProcessToken on the handle you get from Process32First/Next.
Related
I have a collection of SID values and need to display if they are in a given group. I know I can do that with CheckTokenMembership, if I had a token handle. How do I get a token handle from an SID in Windows?
Use LookupAccountSid to get the account for the SID
Use NetUserGetGroups to get all groups this account is a member of. EDIT Note from eryksun: Check target group's SID first. If it's SidTypeGroup, call NetUserGetGroups. If it's SidTypeAlias, call NetUserGetLocalGroups (AKA aliases, such as "BUILTIN\Administrators")
Use LookupAccountName to get the SIDs of the group.
Check if account SID (step 1) is member of the SID collection (step 3). Use EqualSid function.
You find appropriate old code one the old win32.mvps.org pages. Sadly the page is gone. But Wayback machine helps. Here a link to the old fksec samples
You find an easy to use sid class there. It also provides sid::MemberOf and sid::Members functions. The code isn't my style but it works.
I want to validate an opinion with you.
I have to design a web service that searches into a database of restaurants affiliated to a discount program in a specific country around a given address.
The REST call to such a webservice will look like http://server/search?country=<countryCode>&language=<languageCode>&address=<address>&zipcode=<zipcode>
The problem is that some countries do not have zipcodes or do not have them in the entire country.
Now, what would you do if the user passes such a parameter for a country that does not have zipcodes, but he/she passes a valid address?
Return 400 Bad request.
Simply igonre the zipcode parameter and return results based on the valid address
Return an error message in a specific format (e.g. JSON) stating that zipcodes are not supported for that country
Some colleagues are also favoring the following option
4. Simply return no results. And state in the documentation that the zipcode parameter is not supported. Also we have to create a webservice method which returns what fields should be displayed in the user interface.
What option do you think is best and why?
Thanks!
Well the OpenStreetMap Nomination Server returns results even if you dont know the ZIP Code and you can look at the results anyway. What if the user doesnt know the zip code but wants to find hist object?
I would try to search for that specific object anyway, especially because you said that some countries have zip codes partially.
If you simply return nothing te user doesnt know what went wrong and he wont know what to do.
That would depend on the use case. How easy is it for a user of the API to trigger that case? Is it a severe error which the user really should know how to avoid? Or is it something that is not entirely clear, where a user may know (or think he knows) a zipcode where officially there shouldn't be one? Does it come down to trial and error for the user how to retrieve correct results from your API? Is it a bad enough error that the user needs to be informed about it and that he needs to handle this on his side?
If you place this restriction in your API, consider that it will have to be clearly documented when this case is triggered, every user of the API will have to read and understand that documentation, it needs to be clear how to avoid the problem, it needs to be possible for the user to avoid the problem and every user will have to correctly implement extra code on his side to avoid this problem. Is it possible for the user to easily know which areas have zipcodes and which don't?
I think the mantra of "be flexible in what you accept, strict in what you output" applies...
Is it possible to search for users which are beyond my immediate circle using FB graph API?
If not, does having a paid subscription account help to overcome this hurdle?
I'm using following graph query but seems to be restricted within my circle:
https://graph.facebook.com/search?q=xx+yy&limit=5000&type=user&access_token=*
Also if I increase the offset using pagination in the next call, It will still returns the same set of user IDs. So not sure if I'm passing the parameters incorrectly or missing some other parameters.
Thanks for all your help in advance!
Not sure what you mean by your immediate circle in terms of Facebook but I assume you mean your friends. The Graph API allows you to search for all public objects (source) - this means every person (according to answers on this page since names are always publicly available - that's my understanding), not only people who you are friends with on Facebook.
Hence, when you're searching for "John" you should get everyone called John if you're using the Graph API correctly - make sure your access token is valid (you do not need any special permissions to search for people) and your syntax follows the example from here.
In order to test your query I suggest you use the Graph API Explorer before adding the query to your application code. It's a quick way to see if the error is in your query or elsewhere. For example, if you want to find everyone named John, use this link http://developers.facebook.com/tools/explorer?method=GET&path=search%3Fq%3DJohn%26type%3Duser. Just make sure to click Get access token on the right if you're using the Explorer for the first time, otherwise the query will return an error.
I have a BHO which on the first run is gathering activation information and storing this in the registry.
(I think) due to IE's permission's I am only able to store this in the registry branch
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-0-0-00-000000000-000000000-000000000-0000\Software\MyBHO\MyKey
Where S-0-0-00-000000000-000000000-000000000-0000 is a unique key for each user.
Which is fine using RegCreateKey() with "Software\MyBHO\MyKey". It's all created and running lovely. It determines where in space to store the Key with no problems.
The Problem:
When I carry out an uninstall I want to remove this key and as this is run outside of IE I have no way to determine where that key is / what the user string is.
Options I have in mind:
Option 1 (Ideal)
Find out this user string first to then build a new path for the key I wish to remove and remove it. How?
Option 2
At the point of activation store the path to the key in another registry value that can be accessed. Then read, and delete both (Which seems a bit backwards and probably wont work due to the access restrictions of the BHO on the registry (Thus it being written there in the first place))
Do you know if there is any way to find this User key or even how to find the parent dir.
Edit Upon continued research I've found that the thing I'm referring to as "user key" is the current Users "SID". Maybe this will yield me better results.
Call GetUserName to get the user name, and LookupAccountName to get his SID.
ConvertSidToStringSid is a useful utility function to format a SID as a S-1-5-32-00000000-00000000-00000000-00000000-0000 string
If you really want to write per-user data to the registry, use IEGetWriteableHKCU().
In general there is no good way to remove per-user data at uninstall. For example, what if you install as user A and the uninstall as user B? Are you going to go find all of them and delete them? Just leave the turds behind.
Alternatively you could consider using a different data store. Do you really need the registry? Can you store this data in a file? What about Web Storage?
Does anyone have a smal example of how to programmatically, in c/c++, load a users registry hive? I would loike to load a hive set some values and close the hive.
Thanks in advance for any help.
Tony
You can use RegLoadKey() and RegUnLoadKey(). You can build the paths to the user hives (NTUSER.DAT) via the HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList. However, it's generally not a good idea to use these functions willy-nilly. If the user tries to logon while you have his profile loaded, he will be unable to load his profile and will get a temporary default profile.
Documentation says you should pass predefined key HKEY_CURRENT_USER as first argument of RegOpenKeyEx function.
You can also enumerate HKEY_CURRENT_USER passing it directly to RegQueryInfoKey.
I haven't got a specific example, but the Windows API calls you need would be:
RegOpenKeyEx() to load the registry
key
RegSetValueEx() / RegGetValue() [and sister
functions] to get/set registry values
RegCloseKey() to close the
registry.
There's some example code behind this link on codersource.net ... although I can't vouch for how complete or correct it is. Review against the MSDN :-)