Updating extensions for iOS 15/16: Difference between revisions

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(→‎Low Power Mode: Improved example)
m (→‎Low Power Mode: Name the params)
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+ (instancetype)sharedInstance;
+ (instancetype)sharedInstance;
- (NSInteger)getPowerMode; // 1 == Low Power Mode active
- (NSInteger)getPowerMode; // 1 == Low Power Mode active
- (void)setPowerMode:(NSInteger)arg0 fromSource:(id)arg1; // Source == @"SpringBoard"
- (void)setPowerMode:(NSInteger)powerMode fromSource:(id)source; // Source == @"SpringBoard"
@end
@end



Revision as of 02:43, 27 December 2022

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Developing tweaks for the palera1n tethered iOS 15.x JB

This jailbreak is primarily a developer jailbreak and has certain restrictions.

Procursus: New Signing Requirements

iOS 15.0+ requires DER encoding of the entitlements, as such it is required that all tweaks are signed with an updated ldid. iOS 15.1+ adds a requirement on hash agility, added in ldid version 2.1.5-procursus3 which can be found here.

Low Power Mode

iOS 15.0+ introduced a new framework for handling Low Power Mode called LowPowerMode.framework. Toggling Low Power Mode can be done via the _PMLowPowerMode class.

@interface _PMLowPowerMode : NSObject
+ (instancetype)sharedInstance;
- (NSInteger)getPowerMode; // 1 == Low Power Mode active
- (void)setPowerMode:(NSInteger)powerMode fromSource:(id)source; // Source == @"SpringBoard"
@end

%hook ClassName
- (void)toggleLowPower {
    _PMLowPowerMode *lowPowerMode = [%c(_PMLowPowerMode) sharedInstance];
    BOOL active = [lowPowerMode getPowerMode] == 1;
    // BOOL active == [NSProcessInfo processInfo].lowPowerModeEnabled; // alternatively
    [lowPowerMode setPowerMode:!active fromSource:@"SpringBoard"];
}
%end

Framework Changes

SpringBoardHome

SBHIconGridSizeClassSizes

This class is responsible for icon grid constraints.

SBHIconGridSizeClassSizes in all arguments of methods and functions is now passed via pointer, instead of being passed as a raw struct.

You can write code that supports both versions like so:

@interface SBIconListGridLayoutConfiguration : NSObject
-(void)setIconGridSizeClassSizes:(SBHIconGridSizeClassSizes)sizes;
@end

@interface i15SBIconListGridLayoutConfiguration : NSObject
-(void)setIconGridSizeClassSizes:(SBHIconGridSizeClassSizes *)sizes;
@end

...

SBHIconGridSizeClassSizes sizes = { .small = { .columns = (short)widgetWidth(2, loadoutValueColumns), .rows = 2 },
                                    .medium = { .columns = (short)widgetWidth(4, loadoutValueColumns), .rows = 2 },
                                    .large = { .columns = (short)widgetWidth(4, loadoutValueColumns), .rows = 6 },
                                    .extralarge = { .columns = (short)widgetWidth(4, loadoutValueColumns), .rows = 6 } };

if (@available(iOS 15, *))
    // Cast to the iOS 15 Interface so ARC allows us to compile this
    // I need to double-check whether this actually needs to be allocated or whether passing it a stack pointer works fine.
    [(i15SBIconListGridLayoutConfiguration *)config setIconGridSizeClassSizes:&sizes];
else
    [config setIconGridSizeClassSizes:sizes];