fixed sierra support when downloading the app from the internet

Author: Kevin Bradley

main.m

@@ -15,15 +15,103 @@
 #import <Cocoa/Cocoa.h>
 #include <stdio.h>
 
+#include <dlfcn.h>
+
+/*
+ 
+ Added some special code to undo App Translocation so we can setuid the helper.
+ 
+ all praise and credit to these websites and their authors for the solution below.
+ 
+ 
+ 
+ http://lapcatsoftware.com/articles/detect-app-translocation.html
+ https://objective-see.com/blog/blog_0x15.html
+ 
+ */
+
 
-int main(int argc, char *argv[])
-{
-	//FIXME: COMMENT BACK IN BEFORE RELEASE!!!!
-	
 
+Boolean (*mySecTranslocateIsTranslocatedURL)(CFURLRef path, bool *isTranslocated, CFErrorRef * __nullable error);
+CFURLRef __nullable (*mySecTranslocateCreateOriginalPathForURL)(CFURLRef translocatedPath, CFErrorRef * __nullable error);
+
+bool IsTranslocatedURL(CFURLRef currentURL, CFURLRef *originalURL)
+{
+    if (currentURL == NULL)
+    {
+        return false;
+    }
+    
+    // #define NSAppKitVersionNumber10_11 1404
+    if (floor(NSAppKitVersionNumber) <= 1404)
+    {
+        return false;
+    }
+    
+    void *handle = dlopen("/System/Library/Frameworks/Security.framework/Security", RTLD_LAZY);
+    if (handle == NULL)
+    {
+        return false;
+    }
+    
+    bool isTranslocated = false;
 
-	 id pool = [NSAutoreleasePool new];
+    Boolean (*mySecTranslocateIsTranslocatedURL)(CFURLRef path, bool *isTranslocated, CFErrorRef * __nullable error);
+    mySecTranslocateIsTranslocatedURL = dlsym(handle, "SecTranslocateIsTranslocatedURL");
+    if (mySecTranslocateIsTranslocatedURL != NULL)
+    {
+        if (mySecTranslocateIsTranslocatedURL(currentURL, &isTranslocated, NULL))
+        {
+            if (isTranslocated)
+            {
+                if (originalURL != NULL)
+                {
+                    CFURLRef __nullable (*mySecTranslocateCreateOriginalPathForURL)(CFURLRef translocatedPath, CFErrorRef * __nullable error);
+                    mySecTranslocateCreateOriginalPathForURL = dlsym(handle, "SecTranslocateCreateOriginalPathForURL");
+                    if (mySecTranslocateCreateOriginalPathForURL != NULL)
+                    {
+                        *originalURL = mySecTranslocateCreateOriginalPathForURL((CFURLRef)currentURL, NULL);
+                    }
+                    else
+                    {
+                        *originalURL = NULL;
+                    }
+                }
+            }
+        }
+    }
+    
+    dlclose(handle);
+    
+    return isTranslocated;
+}
+
+
 
+
+int main(int argc, char *argv[])
+{
+	id pool = [NSAutoreleasePool new];
+    NSURL *appPath = [NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]];
+    
+    //get original URL
+    NSURL *newPath = nil;
+    
+    if (IsTranslocatedURL((CFURLRef) appPath, &newPath) == true)
+    {
+        
+        //remove quarantine attributes of original
+       
+        [NSTask launchedTaskWithLaunchPath:@"/usr/bin/xattr" arguments:@[@"-cr", (NSURL*)newPath.path]];
+ 
+        //relaunch original
+        
+        // ->use 'open' as allows two instances of app (this instance is exiting)
+        [NSTask launchedTaskWithLaunchPath:@"/usr/bin/open" arguments:@[@"-n", @"-a", newPath.path]];
+        //this instance is done
+        return 0;
+    }
+ 
 
 	 NSString *logPath = [NSHomeDirectory() stringByAppendingPathComponent:LOG_PATH];
 	 freopen([logPath fileSystemRepresentation], "a", stderr);

tetherKit.xcodeproj/project.pbxproj

@@ -762,7 +762,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				CODE_SIGN_IDENTITY = "Developer ID Application: Kevin Bradley (9EUFEA5U7G)";
+				CODE_SIGN_IDENTITY = "Developer ID Application";
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_FIX_AND_CONTINUE = YES;
@@ -794,7 +794,7 @@
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
-				CODE_SIGN_IDENTITY = "Developer ID Application: Kevin Bradley (9EUFEA5U7G)";
+				CODE_SIGN_IDENTITY = "Developer ID Application";
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_FIX_AND_CONTINUE = NO;