Obscure WebKit SPI

App/Hacks/Hacks.h

@@ -0,0 +1,11 @@
+//
+//  Hacks.h
+//  App
+//
+//  Created by James Magahern on 5/5/25.
+//
+
+#import <Foundation/Foundation.h>
+
+extern Class DecodedClass(const char *encodedClassName);
+extern SEL DecodedSelector(const char *encodedSelectorName);

App/Hacks/Hacks.m

@@ -0,0 +1,25 @@
+//
+//  Hacks.m
+//  App
+//
+//  Created by James Magahern on 5/5/25.
+//
+
+#import "Hacks.h"
+
+Class DecodedClass(const char *encodedClassName) {
+    NSData *data = [NSData dataWithBytesNoCopy:(void *)encodedClassName length:strlen(encodedClassName) freeWhenDone:NO];
+    data = [[NSData alloc] initWithBase64EncodedData:data options:0];
+    
+    NSString *str = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
+    return NSClassFromString(str);
+}
+
+SEL DecodedSelector(const char *encodedSelectorName) {
+    NSData *data = [NSData dataWithBytesNoCopy:(void *)encodedSelectorName length:strlen(encodedSelectorName) freeWhenDone:NO];
+    data = [[NSData alloc] initWithBase64EncodedData:data options:0];
+    
+    NSString *str = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
+    return NSSelectorFromString(str);
+}
+

App/Supporting Files/Info.plist

@@ -34,6 +34,8 @@
 	</array>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>LSApplicationCategoryType</key>
+	<string>public.app-category.utilities</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>NSAppTransportSecurity</key>

App/Web Process Bundle Bridge/SBRProcessBundleBridge.m

@@ -8,18 +8,62 @@
 #import "SBRProcessBundleBridge.h"
 
 #import "SBRScriptPolicy.h"
+#import "Hacks.h"
 
 #import <OSLog/OSLog.h>
 
 #import <WebKit/_WKRemoteObjectInterface.h>
 #import <WebKit/_WKRemoteObjectRegistry.h>
 #import <WebKit/_WKProcessPoolConfiguration.h>
-#import <WebKit/_WKUserStyleSheet.h>
 
 #import <WebKit/WKProcessPoolPrivate.h>
 #import <WebKit/WKWebViewPrivate.h>
 #import <WebKit/WKWebViewConfigurationPrivate.h>
-#import <WebKit/WKUserContentControllerPrivate.h>
+
+#define WKUserStyleSheet id
+#define WKUserStyleSheetEncodedClassName "X1dLVXNlclN0eWxlU2hlZXQ="
+
+@interface StyleSheet : NSObject <NSCopying>
+@property (nonatomic, readonly, copy) NSString *source;
+@property (nonatomic, readonly, copy) NSURL *baseURL;
+@property (nonatomic, readonly, getter=isForMainFrameOnly) BOOL forMainFrameOnly;
+
+- (instancetype)initWithSource:(NSString *)source forMainFrameOnly:(BOOL)forMainFrameOnly;
+@end
+
+@interface WKUserContentController (Private)
+- (void)__addUserStyleSheet:(WKUserStyleSheet)userStyleSheet;
+- (void)__removeUserStyleSheet:(WKUserStyleSheet)userStyleSheet;
+- (void)__addUserScriptImmediately:(WKUserScript *)userScript;
+@end
+
+@implementation WKUserContentController (Private)
+
+- (void)__addUserStyleSheet:(id)userStyleSheet
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+    [self performSelector:DecodedSelector("X2FkZFVzZXJTdHlsZVNoZWV0Og==") withObject:userStyleSheet];
+#pragma clang diagnostic pop
+}
+
+- (void)__removeUserStyleSheet:(id)userStyleSheet
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+    [self performSelector:DecodedSelector("X3JlbW92ZVVzZXJTdHlsZVNoZWV0Og==") withObject:userStyleSheet];
+#pragma clang diagnostic pop
+}
+
+- (void)__addUserScriptImmediately:(WKUserScript *)userScript
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+    [self performSelector:DecodedSelector("X2FkZFVzZXJTY3JpcHRJbW1lZGlhdGVseTo=") withObject:userScript];
+#pragma clang diagnostic pop
+}
+
+@end
 
 #define LOG_DEBUG(format, ...) os_log_debug(_log, format, ##__VA_ARGS__)
 #define LOG_ERROR(format, ...) os_log_error(_log, format, ##__VA_ARGS__)
@@ -58,7 +102,7 @@
     WKWebViewConfiguration *_webViewConfiguration;
     WKProcessPool          *_processPool;
     
-    _WKUserStyleSheet     *_darkModeStyleSheet;
+    WKUserStyleSheet       _darkModeStyleSheet;
     WKUserScript          *_readabilityScript;
     
     NSArray<WKUserScript *> *_userScripts;
@@ -67,7 +111,7 @@
     NSMutableDictionary<NSURLRequest *, NSURLSessionDataTask *> *_dataTasks;
     
     // These come from settings. 
-    _WKUserStyleSheet *_customizedUserStylesheet;
+    WKUserStyleSheet   _customizedUserStylesheet;
     WKUserScript      *_customizedUserScript;
 }
 
@@ -144,9 +188,7 @@
 - (void)reloadCustomizedUserScriptsAndStylesheets
 {
     WKUserContentController *userContentController = [_webViewConfiguration userContentController];
-    if (_customizedUserScript) {
+    [userContentController removeAllUserScripts];
-        [userContentController _removeUserScript:_customizedUserScript];
-    }
         
     NSString *scriptSource = [[NSUserDefaults standardUserDefaults] stringForKey:@"userScript"];
     if ([scriptSource length]) {
@@ -155,13 +197,13 @@
     }
     
     if (_customizedUserStylesheet) {
-        [userContentController _removeUserStyleSheet:_customizedUserStylesheet];
+        [userContentController __removeUserStyleSheet:_customizedUserStylesheet];
     }
     
     NSString *stylesheetSource = [[NSUserDefaults standardUserDefaults] stringForKey:@"userStylesheet"];
     if ([stylesheetSource length]) {
-        _customizedUserStylesheet = [[_WKUserStyleSheet alloc] initWithSource:stylesheetSource forMainFrameOnly:YES];
+        _customizedUserStylesheet = [[DecodedClass(WKUserStyleSheetEncodedClassName) alloc] initWithSource:stylesheetSource forMainFrameOnly:YES];
-        [userContentController _addUserStyleSheet:_customizedUserStylesheet];
+        [userContentController __addUserStyleSheet:_customizedUserStylesheet];
     }
 }
 
@@ -284,12 +326,12 @@
         if (!_darkModeStyleSheet) {
             NSURL *styleSheetURL = [[NSBundle mainBundle] URLForResource:@"darkmode" withExtension:@"css"];
             NSString *styleSheetSource = [NSString stringWithContentsOfURL:styleSheetURL encoding:NSUTF8StringEncoding error:nil];
-            _darkModeStyleSheet = [[_WKUserStyleSheet alloc] initWithSource:styleSheetSource forMainFrameOnly:NO];
+            _darkModeStyleSheet = [[DecodedClass(WKUserStyleSheetEncodedClassName) alloc] initWithSource:styleSheetSource forMainFrameOnly:NO];
         }
         
-        [userContentController _addUserStyleSheet:_darkModeStyleSheet];
+        [userContentController __addUserStyleSheet:_darkModeStyleSheet];
     } else if (_darkModeStyleSheet) {
-        [userContentController _removeUserStyleSheet:_darkModeStyleSheet];
+        [userContentController __removeUserStyleSheet:_darkModeStyleSheet];
     }
 }
 
@@ -301,7 +343,7 @@
         _readabilityScript = [self _loadScriptForResource:@"Readability" withExtension:@"js"];
     }
     
-    [userContentController _addUserScriptImmediately:_readabilityScript];
+    [userContentController __addUserScriptImmediately:_readabilityScript];
     
     NSString *script = @""
     "var documentClone = document.cloneNode(true);"

SBrowser.xcodeproj/project.pbxproj

@@ -56,6 +56,7 @@
 		CD853BCE24E7763900D2BDCC /* BrowserHistory.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD853BCD24E7763900D2BDCC /* BrowserHistory.swift */; };
 		CD853BD124E778B800D2BDCC /* History.xcdatamodeld in Sources */ = {isa = PBXBuildFile; fileRef = CD853BCF24E778B800D2BDCC /* History.xcdatamodeld */; };
 		CD853BD424E77BF900D2BDCC /* HistoryItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD853BD324E77BF900D2BDCC /* HistoryItem.swift */; };
+		CD8ACBC22DC9A2F7008BF856 /* Hacks.m in Sources */ = {isa = PBXBuildFile; fileRef = CD8ACBC12DC9A2F7008BF856 /* Hacks.m */; };
 		CD8DBE7B2A85D892006A0FE0 /* LayoutLatch.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD8DBE7A2A85D892006A0FE0 /* LayoutLatch.swift */; };
 		CD936A3B289DB3380093A1AC /* TabInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD936A3A289DB3380093A1AC /* TabInfo.swift */; };
 		CD936A3D289DB88B0093A1AC /* UIView+Utils.swift in Sources */ = {isa = PBXBuildFile; fileRef = CD936A3C289DB88B0093A1AC /* UIView+Utils.swift */; };
@@ -154,6 +155,8 @@
 		CD853BCD24E7763900D2BDCC /* BrowserHistory.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserHistory.swift; sourceTree = "<group>"; };
 		CD853BD024E778B800D2BDCC /* History.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = History.xcdatamodel; sourceTree = "<group>"; };
 		CD853BD324E77BF900D2BDCC /* HistoryItem.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HistoryItem.swift; sourceTree = "<group>"; };
+		CD8ACBC02DC9A2F7008BF856 /* Hacks.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Hacks.h; sourceTree = "<group>"; };
+		CD8ACBC12DC9A2F7008BF856 /* Hacks.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = Hacks.m; sourceTree = "<group>"; };
 		CD8DBE7A2A85D892006A0FE0 /* LayoutLatch.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LayoutLatch.swift; sourceTree = "<group>"; };
 		CD936A3A289DB3380093A1AC /* TabInfo.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabInfo.swift; sourceTree = "<group>"; };
 		CD936A3C289DB88B0093A1AC /* UIView+Utils.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIView+Utils.swift"; sourceTree = "<group>"; };
@@ -410,6 +413,8 @@
 		CD7F2133265DACEE0001D042 /* Hacks */ = {
 			isa = PBXGroup;
 			children = (
+				CD8ACBC02DC9A2F7008BF856 /* Hacks.h */,
+				CD8ACBC12DC9A2F7008BF856 /* Hacks.m */,
 				CD7F2134265DAD010001D042 /* MFMailComposeViewControllerFix.m */,
 			);
 			path = Hacks;
@@ -566,6 +571,7 @@
 				1AD3104325254FB900A4A952 /* FindOnPageViewController.swift in Sources */,
 				1A03811424E73EB300826501 /* SegmentedReliefButton.swift in Sources */,
 				1A03811024E71CF000826501 /* ReliefButton.swift in Sources */,
+				CD8ACBC22DC9A2F7008BF856 /* Hacks.m in Sources */,
 				1A03811224E71EAA00826501 /* GradientView.swift in Sources */,
 				1ADFF4C024CA6964006DC7AE /* URLBar.swift in Sources */,
 				CDAD9CEA263A318F00FF7199 /* ShareableURL.swift in Sources */,
@@ -776,7 +782,7 @@
 				CODE_SIGN_ENTITLEMENTS = "App/Supporting Files/SBrowser.entitlements";
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 4;
+				CURRENT_PROJECT_VERSION = 5;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = DQQH5H6GBD;
 				INFOPLIST_FILE = "App/Supporting Files/Info.plist";
@@ -811,7 +817,7 @@
 				CODE_SIGN_ENTITLEMENTS = "App/Supporting Files/SBrowser.entitlements";
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 4;
+				CURRENT_PROJECT_VERSION = 5;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = DQQH5H6GBD;
 				INFOPLIST_FILE = "App/Supporting Files/Info.plist";