Is there a way to get a notification of some type when a new application is installed? The specifics here have to do with "Here is a list of applications we want to monitor"; I use mdquery to find them (so I can get the paths, and information from the bundle). However, if it's not installed yet, then I can't do that. But if it gets installed later, I'd like to.

Specifically, it doesn't find anything. (Now, this isn't a huge deal, I was just playing with some queries related to another issue I had, and found that I couldn't search that way.) Is this expected? eg, mdfind 'kMDItemFSName == "/"' finds nothing.

I couldn't find anything too recent, but everything seems to say that no, asl_search-like APIs are non-existent for os_log. And the source code for log isn't available so I can't see how it does it...

I'm trying to write a libcurl wrapper using the NSURL* interfaces. (Why? Because we're running into some problems with libcurl and I'd rather not rewrite all of the C++ code, so I thought I'd try wrapping a subset around NSURLSession et al.) One of the things we want to get is the IP address of the remote side (for both GET and POST). I can possibly live without this, but it's very useful for debug and performance information.

#include <stdio.h> #include <sstream> int main(int ac, char **av) { std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> > x; x << "How now brown cow"; return 0; } If I build this on macOS 12, and try to run the binary on macOS 11, it fails because that symbol is not present in /usr/lib/libc++.1.dylib. If I compile it on macOS 11, and run on 11 or later, it works. Is this correct behaviour? Since the dylib version didn't change, I would expect that to mean no ABI changes.

To begin with: I know it's my code, because if I go back to our main branch and try it, I don't get this crash. But I can't figure out what it's unhappy about, so I'm not sure what changes I have to look for. (Also, this is macOS.) The daemon tries to communicate with a Network Extension over XPC. I have a class, with a shared instance, and I have a cached NSXPCConnection connection instance variable. So my code is something like id connection = [[ExtensionCommunication shared] connection], which is created by [[NSXPCConnection alloc] initWithMachServiceName:self.redirectorMachServiceName options:0]. With my changes (whatever they are), when it does [_connection resume], it crashes:   * frame #0: 0x00007ff8191ab20e libxpc.dylib`_xpc_api_misuse + 117     frame #1: 0x00007ff8191963a1 libxpc.dylib`xpc_connection_resume + 54 This happens whether the network extension is activated or not. The crash happens the second time this is called. (Hm, one thing I need to figure out then is why my cached connection object is being set to nil. It shouldn't be. hm.) Anyway! Any suggestions on how I can try to debug this?

If I use NWConnection for a UDP connection, is there a way to get the peer name? Since it's not a stream, data can theoretically come from anywhere; at the C level, I'd use recvfrom which would tell me the remote address. I'm likely to be missing something obvious to everyone but me, I do have a tendency to look at problems as C problems. 😄

Coworkers are trying it and it's not working -- the google response says there was a problem with it, and not much else. I do not have a yubikey (at least not yet 😄), and I'm really not good at the GUI stuff so I don't know as much about it as I probably should. Searching the fora here found a question and comment that didn't make a lot of sense to me, but again I admit to a lot of ignorance here. So any pointers to where I should be look would be appreciated.

Playing with EventKit, I wanted to test requesting access. Which I did once. Yay. Now it's stuck in System Settings... and I don't know how to reset it. (This is on Ventura.)

I just wrote code for our app to use ASWebAuthenticationSession for 3rd-party authentication (in particular, YUBIKEYS WOOHOO). Our app registers a URI scheme of x-com-kithrup for launch services events, so I used x-com-kithrup-yubi for ASWebAUthenticationSession. Only, I didn't change the back end, so it still redirects to x-com-kithrup://success on a successful login. And... ASWebAuthenticationSession is still calling the handler when it gets a URL with the x-com-kithrup URI, instead of the x-com-kithrup-yubi URI scheme.

Is it actually usable as a fireawall in macOS? I tried (as an example) adding a rule to block port 80, and it did not seem to work. But, that's all I tried -- just added a line to /etc/pf.conf

Our project uses CMake, which generates a .xcodeproj bundle. Our project has an existing network extension (Transparent Proxy Provider); I'm trying to add a second one, which is a packet filter. Xcode is extremely unhappy: error: Multiple commands produce '/Build/mybuild/Entitlements.plist' note: Target 'PacketFilter' (project 'project') has write command with output /Build/mybuild/Entitlements.plist note: Target 'ProxyProvier' (project 'project') has write command with output /Build/mybuild/Entitlements.plist My problem is: I can't tell what is generating the Entitlements.plist file! If I build each of those two targets separately, it does get generated. But if I search for "Entitlements" in the bundle, there is nothing. So I am unable to tell what is going on. Each of the extension targets has their own entitlements file -- each of them has their own CMakeLists.txt file, and has this setting: XCODE_ATTRIBUTE_CODE_SIGN_ENTITLEMENTS "${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.entitlements" but something -- and I assume it's CMake, although I can't find anything that does that -- is producing a rule somewhere that says it creates Entitlements.plist. And it's doing it outside of the project.xcodeproj bundle? How can I track this down and/or fix it?

I looked at other posts with this problem and didn't find anything that worked. I used Keychain Access and Certificate Assistant to create a CSR; I uploaded that on the portal. Downloaded the certificate, and I get that error whenever I try to import it. I can import it into the System one, but then it's untrusted, and I still can't export it as a p12 file. This is one of the few times I did everything by reading the documentation as I did it, so I'm very confused.

I had dealt with this in cmake, and then forgotten about it -- now trying my Xcode-only test project, and it won't work, because the profile has -systemextension as a suffix, while the one Xcode generates doesn't. Am I missing something in how to get Xcode to deal with this?

Now that I can build again, I'm back to experimenting, this time using Firebase. To display my items, I set up a Table, and this mostly works, barring a couple of minor, crashy details. I've got @State var selectedItems = Set<Item.ID>() private var tableData: [Item] { return self.items.sorted(using: self.sortOrder) } var body: some View { Table(self.tableData, selection: self.$selectedItems, sortOrder: self.$sortOrder) { TableColumn("Item", value: \.name) TableColumn("Count", value: \.count) { item in Text("\(item.count)") } } Edited down a bit but that's the basics. The two problems I've got are: When I select a row, it flashes but does not stay highlighted If I select the same row again, it crashes with: Fatal error: Duplicate elements of type 'Optional<String>' were found in a Set. This usually means either that the type violates Hashable's requirements, or that members of such a set were mutated after insertion. I put in a willSet for the selectedItems which was not particularly helpful. This doesn't happen with the CoreData version, so I assume it's something wonky about Firebase. Or my limited skills. Searching for this crash doesn't seem to show anything useful.