restriction

问题 I'm trying to restrict apps in Android by modifying source code. I was able to get it working for Internet, but I was not able to restrict apps from using Camera or Location? Internet permission is enforced at linux process level with group-id. But I Camera/Location are not enforced the same way. So I want to know what is the best place to restrict the apps for these permissions. Are checkCallingPermission() enforceCallingPermission() methods the right ones? 回答1: Yes, you're right. In these

问题 Everytime I load a MHT in Google Chrome, I get following error: Blocked script execution in 'file:///C:/...' because the document's frame is sandboxed and the 'allow-scripts' permission is not set . I know that allow-scripts is a value for the iframe 's sandbox attribute, so I can't set its value to allow-scripts , because the top frame seems to be an internal frame. And this internal frame only adds the sandbox attribute, when loading files with file:/// . Is there a way to allow scripts to

问题 I would like to validate that an element 'Test' should Have its content restricted (for example, using a pattern restriction), and Contain certain attributes (for example, 'id', 'class' and 'name'). The XSD I'm writing looks like this: <xsd:element name="Test" minOccurs="0" maxOccurs="unbounded"> <xsd:complexType mixed="true"> <xsd:simpleContent> <xsd:restriction> <xsd:pattern value="xyz"/> </xsd:restriction> </xsd:simpleContent> <xsd:attribute name="id" type="xsd:string"></xsd:attribute>

问题 >>> class BOOL(bool): ... print "why?" ... why? Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: Error when calling the metaclass bases type 'bool' is not an acceptable base type I thought Python trusted the programmer. 回答1: Guido's take on it: I thought about this last night, and realized that you shouldn't be allowed to subclass bool at all! A subclass would only be useful when it has instances, but the mere existance of an instance of a subclass of bool

问题 I'm setting up Solr using Jetty. I would like to restrict access to only a few IP addresses. It doesn't seem immediately obvious that this can be done using Jetty. Is it possible and if so, how? 回答1: Solr 4.2.1 uses Jetty 8.1.8. Jetty 8 (as noted by jonas789) doesn't support .htaccess. Instead, it uses IPAccessHandler, which doesn't have great documentation available. I had to play with it quite a bit to get it work, so I'm posting an updated solution here. IPAccessHandler manages a blacklist

问题 I want to list all files and folders that my program has access to and write them to a text file. i write a method which help me do this but in some cases (folder is access denied) my program stop working. i search here a lot and find some links that said use try/catch and sth else but i cant fix my problem yet. string spcdirectorypath = @"C:\Users"; string spcfiletape = "*.*"; DirectoryInfo d = new DirectoryInfo(spcdirectorypath);//Assuming Test is your Folder FileInfo[] Files = d.GetFiles

问题 I have a site that has two versions, for one country A and for all of the rest, and is restricted by IP, The thing is that from country A, if they share a URL in facebook (for example); when facebook tries to scan for title, description and image it fails (as actually should), Is there a way to detect that is facebook/twitter/google IP and let them read it? (i understand that if the link is clicked outside country A or facebook it will fail) 回答1: There's some info on the individual websites:

问题 How would I define a column in PostgreSQL such that each value must be in a sequence, not the sequence you get when using type serial but one such that a value 2 cannot be inserted unless there exists a value 1 already in the column? 回答1: Theoretically, you could use a constraint that worked like this. (But it won't work in practice.) Count the rows. Evaluate max(column) - min(column) + 1 . Compare the results. You'd probably have to insert one row before creating the CHECK constraint. If you

问题 How would I define a column in PostgreSQL such that each value must be in a sequence, not the sequence you get when using type serial but one such that a value 2 cannot be inserted unless there exists a value 1 already in the column? 回答1: Theoretically, you could use a constraint that worked like this. (But it won't work in practice.) Count the rows. Evaluate max(column) - min(column) + 1 . Compare the results. You'd probably have to insert one row before creating the CHECK constraint. If you

问题 Ok, it's friday afternoon, and i've had a long week so would appreciate some help! Currently, i have a list of IP ranges, as follows: List<IPRange> ipRanges = new List<IPRange>(); ipRanges.Add(new IPRange { From = "145.36.0.0", To = "145.36.255.255" }); ipRanges.Add(new IPRange { From = "194.183.227.184", To = "194.183.227.191" }); ipRanges.Add(new IPRange { From = "193.131.192.0", To = "193.131.223.255" }); After getting the IP of the client, if it falls anywhere between these sets of ranges