Add BGSessionFix tweak for simulator sessions

.gitignore

@@ -5,3 +5,6 @@ Build.md
 /App
 /GoodnotesPro
 /StravaPremium
+scripts/build_install_loop.sh
+CanardDumper/Tweak.x.bak
+CanardDumper/Tweak_POC.x

BGSessionFix/.gitignore

@@ -0,0 +1,3 @@
+.theos/
+packages/
+.DS_Store

BGSessionFix/BGSessionFix.plist

@@ -0,0 +1,7 @@
+{
+	Filter = {
+		Bundles = (
+			"app.bundle.id",
+		);
+	};
+}

BGSessionFix/Makefile

@@ -0,0 +1,14 @@
+TARGET = iphone:latest:15.0
+ARCHS = arm64
+INSTALL_TARGET_PROCESSES = app.bundle.id
+
+include $(THEOS)/makefiles/common.mk
+
+TWEAK_NAME = BGSessionFix
+BGSessionFix_FILES = Tweak.x
+BGSessionFix_CFLAGS = -fobjc-arc -Wno-deprecated-declarations -std=c++11 -x objective-c++
+BGSessionFix_CXXFLAGS = -std=c++11
+BGSessionFix_FRAMEWORKS = Foundation UIKit
+BGSessionFix_LDFLAGS = -lstdc++
+
+include $(THEOS_MAKE_PATH)/tweak.mk

BGSessionFix/Tweak.x

@@ -0,0 +1,16 @@
+#import <Foundation/Foundation.h>
+
+%hook NSURLSessionConfiguration
+
++ (NSURLSessionConfiguration *)backgroundSessionConfigurationWithIdentifier:(NSString *)identifier {
+    NSLog(@"[BGSessionFix] Redirecting background session '%@' to a default (foreground) config", identifier);
+    return [NSURLSessionConfiguration defaultSessionConfiguration];
+}
+
+// // Deprecated pre-iOS8 entry point
+// + (NSURLSessionConfiguration *)backgroundSessionConfiguration:(NSString *)identifier {
+//     NSLog(@"[BGSessionFix] backgroundSessionConfiguration:'%@' (deprecated API) -> forcing default config", identifier);
+//     return [NSURLSessionConfiguration defaultSessionConfiguration];
+// }
+
+%end

BGSessionFix/control

@@ -0,0 +1,9 @@
+Package: xyz.nohamr.bgsessionfix
+Name: BGSessionFix
+Version: 1.0.0
+Architecture: iphoneos-arm
+Description: Redirects background NSURLSession configs to foreground configs (Simulator dev use)
+Maintainer: NohamR
+Author: NohamR
+Section: Tweaks
+Depends: mobilesubstrate (>= 0.9.5000)

BGSessionFix/index.md

@@ -0,0 +1,12 @@
+Tweak that redirects background NSURLSession configurations to foreground (default) configurations, for use when developing/debugging apps in the iOS Simulator.
+
+The iOS Simulator does not run `nsurlsessiond`, the system daemon that backs `NSURLSession` background transfers. Any app that uses `backgroundSessionConfigurationWithIdentifier:` to download or upload files (so the transfer can survive app suspension/termination on a real device) will fail in the Simulator with errors such as:
+
+```
+No XPC connection in Simulator
+BackgroundSession <...> an error occurred on the xpc connection to setup
+the background session: ... connection to service named com.apple.nsurlsessiond
+BackgroundSession <...> failed to create a background NSURLSessionDownloadTask,
+as remote session is unavailable
+Task <...> finished with error [-1] "unknown error"
+```

CanardDumper/.gitignore

@@ -0,0 +1,3 @@
+.theos/
+packages/
+.DS_Store

CanardDumper/CanardDumper.plist

@@ -0,0 +1,7 @@
+{
+	Filter = {
+		Bundles = (
+			"fr.lecanardenchaine.app",
+		);
+	};
+}

CanardDumper/Makefile

@@ -0,0 +1,14 @@
+TARGET = iphone:latest:15.0
+ARCHS = arm64 arm64e
+INSTALL_TARGET_PROCESSES = fr.lecanardenchaine.app
+
+include $(THEOS)/makefiles/common.mk
+
+TWEAK_NAME = CanardDumper
+CanardDumper_FILES = Tweak.x
+CanardDumper_CFLAGS = -fobjc-arc -Wno-deprecated-declarations -std=c++11 -x objective-c++
+CanardDumper_CXXFLAGS = -std=c++11
+CanardDumper_FRAMEWORKS = Foundation UIKit
+CanardDumper_LDFLAGS = -lstdc++
+
+include $(THEOS_MAKE_PATH)/tweak.mk

CanardDumper/Tweak.x

@@ -0,0 +1,153 @@
+#import <substrate.h>
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+#pragma mark - Constants
+
+static NSString *const kCanardLogTag = @"[CanardDumper]";
+static NSString *const kCanardDumpDirectoryName = @"CanardDumps";
+
+#pragma mark - State
+
+static NSString *CanardArchivePassword;
+static int CanardLastSavedReadSize = -1;
+
+#pragma mark - UI Helpers
+
+static UIViewController *CanardTopViewController(UIViewController *viewController) {
+    if (!viewController) return nil;
+    
+    if (viewController.presentedViewController) {
+        return CanardTopViewController(viewController.presentedViewController);
+    }
+    if ([viewController isKindOfClass:[UINavigationController class]]) {
+        return CanardTopViewController([(UINavigationController *)viewController visibleViewController]);
+    }
+    if ([viewController isKindOfClass:[UITabBarController class]]) {
+        return CanardTopViewController([(UITabBarController *)viewController selectedViewController]);
+    }
+    return viewController;
+}
+
+static void CanardPresentShareSheet(NSString *filePath) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+        UIWindow *keyWindow = nil;
+        for (UIWindow *window in [UIApplication sharedApplication].windows) {
+            if (window.isKeyWindow) {
+                keyWindow = window;
+                break;
+            }
+        }
+
+        UIViewController *topVC = CanardTopViewController(keyWindow.rootViewController);
+        if (!topVC) {
+            NSLog(@"%@ Unable to present share sheet", kCanardLogTag);
+            return;
+        }
+
+        NSURL *fileURL = [NSURL fileURLWithPath:filePath];
+        UIActivityViewController *shareController = [[UIActivityViewController alloc] initWithActivityItems:@[fileURL] applicationActivities:nil];
+        shareController.popoverPresentationController.sourceView = topVC.view;
+        shareController.popoverPresentationController.sourceRect = CGRectMake(
+            CGRectGetMidX(topVC.view.bounds),
+            CGRectGetMidY(topVC.view.bounds),
+            0, 0
+        );
+        [topVC presentViewController:shareController animated:YES completion:nil];
+    });
+}
+
+#pragma mark - File Helpers
+
+static NSString *CanardSanitizedFilename(NSString *password) {
+    if (password.length == 0) return @"unknown";
+
+    NSCharacterSet *invalidChars = [NSCharacterSet characterSetWithCharactersInString:@"/:\\?%*|\"<>\n\r\t"];
+    NSString *sanitized = [[password componentsSeparatedByCharactersInSet:invalidChars] componentsJoinedByString:@"_"];
+    return sanitized.length > 0 ? sanitized : @"unknown";
+}
+
+static NSString *CanardDumpDirectory() {
+    NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
+    return [docsPath stringByAppendingPathComponent:kCanardDumpDirectoryName];
+}
+
+static bool CanardSaveData(NSData *data, NSString *password) {
+    NSFileManager *fm = [NSFileManager defaultManager];
+    NSString *dumpDir = CanardDumpDirectory();
+
+    if (![fm fileExistsAtPath:dumpDir]) {
+        [fm createDirectoryAtPath:dumpDir withIntermediateDirectories:YES attributes:nil error:nil];
+    }
+
+    NSString *fileName = [NSString stringWithFormat:@"file_%@.pdf", CanardSanitizedFilename(password)];
+    NSString *filePath = [dumpDir stringByAppendingPathComponent:fileName];
+
+    if ([data writeToFile:filePath atomically:YES]) {
+        NSLog(@"%@ Saved to %@ (%lu bytes)", kCanardLogTag, filePath, (unsigned long)data.length);
+        CanardPresentShareSheet(filePath);
+        return YES;
+    }
+
+    NSLog(@"%@ Failed to save to %@", kCanardLogTag, filePath);
+    return NO;
+}
+
+#pragma mark - DlyArchiveReader Hooks
+
+%hook DlyArchiveReader
+
+- (bool)setUpArchiveError:(id *)error {
+    NSLog(@"%@ setUpArchiveError: %p", kCanardLogTag, error);
+    return %orig;
+}
+
+- (NSString *)password {
+    NSString *pwd = %orig;
+    CanardArchivePassword = [pwd copy];
+    NSLog(@"%@ password: %@", kCanardLogTag, pwd);
+    return pwd;
+}
+
+- (int)getDocumentSize {
+    int size = %orig;
+    NSLog(@"%@ getDocumentSize: %d", kCanardLogTag, size);
+    return size;
+}
+
+- (NSData *)readDataAt:(int)offset withSize:(int)size {
+    NSLog(@"%@ readDataAt: offset=%d size=%d", kCanardLogTag, offset, size);
+    NSLog(@"%@ %@", kCanardLogTag, [[NSThread callStackSymbols] componentsJoinedByString:@"\n"]);
+
+    NSData *data = %orig;
+
+    if (data.length > 0 && size != CanardLastSavedReadSize) {
+        CanardLastSavedReadSize = size;
+        CanardSaveData(data, CanardArchivePassword);
+    }
+
+    return data;
+}
+
+%end
+
+#pragma mark - DlyCoreArchive Hooks
+
+%hook DlyCoreArchive
+
+- (instancetype)initWithArchivePath:(NSString *)path error:(NSError **)error {
+    NSLog(@"%@ initWithArchivePath: %@ error:%p", kCanardLogTag, path, error);
+    return %orig;
+}
+
++ (instancetype)newWithArchivePath:(NSString *)path error:(NSError **)error {
+    NSLog(@"%@ newWithArchivePath: %@ error:%p", kCanardLogTag, path, error);
+    return %orig;
+}
+
+- (bool)openArchiveWithType:(NSUInteger)type error:(id *)error {
+    NSLog(@"%@ openArchiveWithType: %lu error:%p", kCanardLogTag, (unsigned long)type, error);
+    return %orig;
+}
+
+%end

CanardDumper/control

@@ -0,0 +1,9 @@
+Package: xyz.nohamr.canarddumper
+Name: CanardDumper
+Version: 1.0.0
+Architecture: iphoneos-arm
+Description: Dumps extracted files from DlyCore DlyArchiveFile::GetFile to Documents/CanardDumps for Le Canard Enchaîné app analysis
+Maintainer: NohamR
+Author: NohamR
+Section: Tweaks
+Depends: mobilesubstrate (>= 0.9.5000)

README.md

@@ -20,6 +20,7 @@ iOS tweaks built with [Theos](https://theos.dev), injected into IPAs via [cyan](
 | [GPXViewer2](GPXViewer2)                           | GPXViewer 2              | iOS 14+     |
 | [RMHook](RMHook/index.md)                          | reMarkable               | iOS         |
 | [HatchDragons](HatchDragons/index.md)              | HatchDragons 1.2.1       | iOS 18+     |
+| [BGSessionFix](BGSessionFix/index.md)              | BGSessionFix             | iOS 15+     |
 
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