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/* UIKit Tools - command-line utilities for UIKit
* Copyright (C) 2008-2012 Jay Freeman (saurik)
*/
/* Modified BSD License {{{ */
/*
* Redistribution and use in source and binary
* forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the
* above copyright notice, this list of conditions
* and the following disclaimer.
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions
* and the following disclaimer in the documentation
* and/or other materials provided with the
* distribution.
* 3. The name of the author may not be used to endorse
* or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* }}} */
#import <GraphicsServices/GraphicsServices.h>
#import <UIKit/UIKit.h>
#include <stdio.h>
#include <dlfcn.h>
#include <objc/runtime.h>
static CFArrayRef (*$GSSystemCopyCapability)(CFStringRef);
static CFArrayRef (*$GSSystemGetCapability)(CFStringRef);
void OnGSCapabilityChanged(
CFNotificationCenterRef center,
void *observer,
CFStringRef name,
const void *object,
CFDictionaryRef info
) {
CFRunLoopStop(CFRunLoopGetCurrent());
}
int main(int argc, char *argv[]) {
dlopen("/System/Library/Frameworks/Foundation.framework/Foundation", RTLD_GLOBAL | RTLD_LAZY);
dlopen("/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices", RTLD_GLOBAL | RTLD_LAZY);
NSAutoreleasePool *pool = [[objc_getClass("NSAutoreleasePool") alloc] init];
NSString *name = nil;
if (argc == 2)
name = [objc_getClass("NSString") stringWithUTF8String:argv[0]];
else if (argc > 2) {
fprintf(stderr, "usage: %s [capability]\n", argv[0]);
exit(1);
}
$GSSystemCopyCapability = reinterpret_cast<CFArrayRef (*)(CFStringRef)>(dlsym(RTLD_DEFAULT, "GSSystemCopyCapability"));
$GSSystemGetCapability = reinterpret_cast<CFArrayRef (*)(CFStringRef)>(dlsym(RTLD_DEFAULT, "GSSystemGetCapability"));
CFNotificationCenterAddObserver(
CFNotificationCenterGetDarwinNotifyCenter(),
NULL,
&OnGSCapabilityChanged,
CFSTR("GSCapabilitiesChanged"),
NULL,
NULL
);
const NSArray *capability;
for (;;) {
if ($GSSystemCopyCapability != NULL) {
capability = reinterpret_cast<const NSArray *>((*$GSSystemCopyCapability)(reinterpret_cast<CFStringRef>(name)));
if (capability != nil)
capability = [capability autorelease];
} else if ($GSSystemGetCapability != NULL) {
capability = reinterpret_cast<const NSArray *>((*$GSSystemGetCapability)(reinterpret_cast<CFStringRef>(name)));
} else {
capability = nil;
break;
}
if (capability != nil)
break;
CFRunLoopRun();
}
printf("%s\n", capability == nil ? "(null)" : [[capability description] UTF8String]);
[pool release];
return 0;
}
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