PojavLauncher_iOS/Natives/utils.m

#import <SafariServices/SafariServices.h>

#include "jni.h"
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "utils.h"

CFTypeRef SecTaskCopyValueForEntitlement(void* task, NSString* entitlement, CFErrorRef  _Nullable *error);
void* SecTaskCreateFromSelf(CFAllocatorRef allocator);

BOOL getEntitlementValue(NSString *key) {
    void *secTask = SecTaskCreateFromSelf(NULL);
    CFTypeRef value = SecTaskCopyValueForEntitlement(SecTaskCreateFromSelf(NULL), key, nil);
    if (value != nil) {
        CFRelease(value);
    }
    CFRelease(secTask);

    return value != nil && [(__bridge id)value boolValue];
}

BOOL isJITEnabled() {
    if (getEntitlementValue(@"dynamic-codesigning")) {
        return YES;
    }

    int flags;
    csops(getpid(), 0, &flags, sizeof(flags));
    return (flags & CS_DEBUGGED) != 0;
}

void openLink(UIViewController* sender, NSURL* link) {
    void *framework = dlopen("/System/Library/Frameworks/SafariServices.framework/SafariServices", RTLD_GLOBAL);
    if (framework == nil) {
        NSData *data = [link.absoluteString dataUsingEncoding:NSUTF8StringEncoding];
        CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
        [filter setValue:data forKey:@"inputMessage"];
        UIImage *image = [UIImage imageWithCIImage:filter.outputImage scale:1.0 orientation:UIImageOrientationUp];
        UIGraphicsBeginImageContextWithOptions(CGSizeMake(300, 300), NO, 0.0);
        CGRect frame = CGRectMake(0, 0, 300, 300);
        [image drawInRect:frame];
        UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
        imageView.image = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

        UIAlertController* alert = [UIAlertController alertControllerWithTitle:nil
            message:link.absoluteString
            preferredStyle:UIAlertControllerStyleAlert];

        UIViewController *vc = UIViewController.new;
        vc.view = imageView;
        [alert setValue:vc forKey:@"contentViewController"];

        UIAlertAction* doneAction = [UIAlertAction actionWithTitle:localize(@"Done", nil) style:UIAlertActionStyleCancel handler:nil];
        [alert addAction:doneAction];
        [sender presentViewController:alert animated:YES completion:nil];
    } else {
        SFSafariViewController *vc = [[NSClassFromString(@"SFSafariViewController ") alloc] initWithURL:link];
        [sender presentViewController:vc animated:YES completion:nil];
    }
}

NSMutableDictionary* parseJSONFromFile(NSString *path) {
    NSError *error;

    NSString *content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
    if (content == nil) {
        NSLog(@"[ParseJSON] Error: could not read %@: %@", path, error.localizedDescription);
        return [@{@"error": error} mutableCopy];
    }

    NSData* data = [content dataUsingEncoding:NSUTF8StringEncoding];
    NSMutableDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
    if (error) {
        NSLog(@"[ParseJSON] Error: could not parse JSON: %@", error.localizedDescription);
        return [@{@"error": error} mutableCopy];
    }
    return dict;
}

NSError* saveJSONToFile(NSDictionary *dict, NSString *path) {
    // TODO: handle rename
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
    if (jsonData == nil) {
        return error;
    }
    BOOL success = [jsonData writeToFile:path options:NSDataWritingAtomic error:&error];
    if (!success) {
        return error;
    }
    return nil;
}

NSString* localize(NSString* key, NSString* comment) {
    NSString *value = NSLocalizedString(key, nil);
    if (![NSLocale.preferredLanguages[0] isEqualToString:@"en"] && [value isEqualToString:key]) {
        NSString* path = [NSBundle.mainBundle pathForResource:@"en" ofType:@"lproj"];
        NSBundle* languageBundle = [NSBundle bundleWithPath:path];
        value = [languageBundle localizedStringForKey:key value:nil table:nil];

        if ([value isEqualToString:key]) {
            value = [[NSBundle bundleWithIdentifier:@"com.apple.UIKit"] localizedStringForKey:key value:nil table:nil];
        }
    }

    return value;
}

CGFloat MathUtils_dist(CGFloat x1, CGFloat y1, CGFloat x2, CGFloat y2) {
    const CGFloat x = (x2 - x1);
    const CGFloat y = (y2 - y1);
    return (CGFloat) hypot(x, y);
}

//Ported from https://www.arduino.cc/reference/en/language/functions/math/map/
CGFloat MathUtils_map(CGFloat x, CGFloat in_min, CGFloat in_max, CGFloat out_min, CGFloat out_max) {
    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

void _CGDataProviderReleaseBytePointerCallback(void *info,const void *pointer) {
}

CGFloat dpToPx(CGFloat dp) {
    CGFloat screenScale = [[UIScreen mainScreen] scale];
    return dp * screenScale;
}

CGFloat pxToDp(CGFloat px) {
    CGFloat screenScale = [[UIScreen mainScreen] scale];
    return px / screenScale;
}

void setButtonPointerInteraction(UIButton *button) {
    if(@available (iOS 13.4, *)) {
        button.pointerInteractionEnabled = YES;
        button.pointerStyleProvider = ^ UIPointerStyle* (UIButton* button, UIPointerEffect* proposedEffect, UIPointerShape* proposedShape) {
            UITargetedPreview *preview = [[UITargetedPreview alloc] initWithView:button];
            return [UIPointerStyle styleWithEffect:[UIPointerHighlightEffect effectWithPreview:preview] shape:proposedShape];
        };
    }
}

void setViewBackgroundColor(UIView* view) {
    if(@available(iOS 13.0, *)) {
        view.backgroundColor = UIColor.systemBackgroundColor;
    } else {
        view.backgroundColor = UIColor.whiteColor;
    }
}