Integrated JitStreamer attach on startup

Natives/LoginViewController.m

@@ -1,6 +1,7 @@
 #include <dirent.h>
 #include <stdio.h>
 
+#import "AFNetworking.h"
 #import <AuthenticationServices/AuthenticationServices.h>
 #import "authenticator/BaseAuthenticator.h"
 
@@ -188,6 +189,14 @@
         technoNote.textAlignment = NSTextAlignmentCenter;
         [scrollView addSubview:technoNote];
     }
+
+    if (!getEntitlementValue(@"dynamic-codesigning")) {
+        if (isJITEnabled()) {
+            self.title = NSLocalizedString(@"login.jit.enabled", nil);
+        } else { 
+            [self enableJITWithJitStreamer];
+        }
+    }
 }
 
 - (void)displayProgress:(NSString *)title {
@@ -375,6 +384,47 @@
     [self presentViewController:vc animated:YES completion:nil];
 }
 
+- (void)enableJITWithJitStreamer
+{
+    [self displayProgress:NSLocalizedString(@"login.jit.checking", nil)];
+
+    // TODO: customizable address
+    NSString *address = @"69.69.0.1";
+
+    AFHTTPSessionManager *manager = AFHTTPSessionManager.manager;
+    manager.requestSerializer.timeoutInterval = 10;
+    manager.responseSerializer = AFHTTPResponseSerializer.serializer;
+    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/plain", nil];
+    [manager GET:[NSString stringWithFormat:@"http://%@/version", address] parameters:nil headers:nil progress:nil success:^(NSURLSessionDataTask *task, NSData *response) {
+        NSString *version = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
+        NSLog(@"Found JitStreamer %@", version);
+        self.title = NSLocalizedString(@"login.jit.found.JitStreamer", nil);
+        manager.requestSerializer.timeoutInterval = 0;
+        manager.responseSerializer = AFJSONResponseSerializer.serializer;
+        [manager POST:[NSString stringWithFormat:@"http://%@/attach/%d/", address, getpid()] parameters:nil headers:nil progress:nil success:^(NSURLSessionDataTask *task, id response) {
+            self.title = NSLocalizedString(@"login.jit.enabled", nil);
+            self.navigationItem.leftBarButtonItem = nil;
+        } failure:^(NSURLSessionDataTask *task, NSError *error) {
+            NSData *errorData = error.userInfo[AFNetworkingOperationFailingURLResponseDataErrorKey];
+            NSDictionary *errorDict = [NSJSONSerialization JSONObjectWithData:errorData options:0 error:nil];
+            self.title = [NSString stringWithFormat:NSLocalizedString(@"login.jit.fail.JitStreamer", nil), errorDict[@"message"]];
+            self.navigationItem.leftBarButtonItem = nil;
+            showDialog(self, NSLocalizedString(@"Error", nil), errorDict[@"message"]);
+            // Request may fail if detach is unsuccessful
+            if (isJITEnabled()) {
+                self.title = NSLocalizedString(@"login.jit.enabled", nil);
+            } else {
+                // TODO: [self enableJITWithAltJIT];
+            } 
+        }];
+    } failure:^(NSURLSessionDataTask *task, NSError *error) {
+        self.title = @"";
+        self.navigationItem.leftBarButtonItem = nil;
+        //showDialog(self, @"Error", [NSString stringWithFormat:@"%@", error]);
+        // TODO: [self enableJITWithAltJIT];
+    }];
+}
+
 - (void)aboutLauncher
 {
     AboutLauncherViewController *vc = [[AboutLauncherViewController alloc] init];

Natives/en.lproj/Localizable.strings

@@ -21,6 +21,11 @@
 "login.alert.title" = "Login";
 "login.alert.field.username" = "Username";
 
+"login.jit.checking" = "Checking for JIT";
+"login.jit.enabled" = "JIT has been enabled";
+"login.jit.fail.JitStreamer" = "JitStreamer error: %@";
+"login.jit.found.JitStreamer" = "Found JitStreamer, enabling JIT";
+
 "login.menu.about" = "About PojavLauncher";
 "login.menu.sendlogs" = "Send your logs";
 "login.menu.updates" = "Recent updates";

Natives/ios_uikit_bridge.m

@@ -35,7 +35,7 @@ void internal_showDialog(UIViewController *viewController, NSString* title, NSSt
 
 void showDialog(UIViewController *viewController, NSString* title, NSString* message) {
     dispatch_async(dispatch_get_main_queue(), ^{
-        internal_showDialog(currentVC(), title, message);
+        internal_showDialog(viewController ? viewController : currentVC(), title, message);
     });
 }
 

Natives/utils.h

@@ -41,6 +41,10 @@ JavaVM* runtimeJavaVMPtr;
 JNIEnv* runtimeJNIEnvPtr;
 //__weak UIViewController *viewController;
 
+#define CS_DEBUGGED 0x10000000
+int csops(pid_t pid, unsigned int ops, void *useraddr, size_t usersize);
+BOOL isJITEnabled();
+
 void* gbuffer; // OSMesa framebuffer
 long showingWindow;
 int savedWidth, savedHeight;

Natives/utils.m

@@ -5,9 +5,9 @@
 #include <unistd.h>
 
 #include "log.h"
-
 #include "utils.h"
 
+BOOL getEntitlementValue(NSString *key);
 
 @implementation UIWindow(ext)
 
@@ -48,6 +48,15 @@ UIViewController* currentVC() {
     return [delegate window].visibleViewController;
 }
 
+BOOL isJITEnabled() {
+    if (getEntitlementValue(@"dynamic-codesigning")) {
+        return YES;
+    }
+
+    int flags;
+    csops(getpid(), 0, &flags, sizeof(flags));
+    return (flags & CS_DEBUGGED) != 0;
+}
 
 NSMutableDictionary* parseJSONFromFile(NSString *path) {
     NSError *error;

README.md

@@ -24,10 +24,13 @@ The [PojavLauncher Website](https://pojav.ml) has extensive documentation on how
 ### Without jailbreak (sideload as IPA)
 Note: This is experimental, although game works smoothly, you should not set Render distance too much.
 
-1. Install [AltStore](https://altstore.io)
+1. Install [AltStore](https://altstore.io). Others will also work.
 2. Download an IPA build of PojavLauncher in the Actions tab.
-3. Open the downloaded IPA in AltStore to install.
-4. Launch PojavLauncher with JIT enabled.
+3. Open the downloaded IPA in the sideload app to install.
+4. For enabling JIT, choose one of these:
+ - Setup [JitStreamer](http://jitstreamer.com), then launch PojavLauncher. JIT will be automatically enabled on startup. This is the most convenient way.
+ - Launch PojavLauncher with `Enable JIT` option in AltStore. This requires the device to be plugged in the computer or have Wi-Fi syncing enabled.
+ - Setup and use others such as [Jitterbug](https://github.com/osy/Jitterbug).
 
 ### Procursus-bootstraps
 *Note: This is currently unavailable. Will be fixed soon! For the meantime, you can follow the same way as [below](#bingnerelucubratus-bootstraps)*.